In this task, you are given a context and four options. Each option is a suggested ending for the context. You should read the context and pick the best ending for the context. Please answer with "A", "B", "C", and "D". 

[header] How to have healthy kidneys [title] Stay hydrated. [step] Staying properly hydrated is one of the best ways to keep your kidneys healthy. Without adequate water, your kidneys can lose some of their ability to filter your blood, and may even become damaged over the course of your lifetime. <sep> (A) [substeps] Drinking water helps your kidneys flush sodium, urea, toxins, and waste out of your body. By staying properly hydrated, you can significantly reduce your risk of developing chronic kidney disease. (B) Aim to drink at least 8 fluid ounces of water every day. This will help reduce any additional fluid or waste in your system and will also allow you to more easily relieve the symptoms of kidney problems. (C) Insufficient water will contribute to poor kidney function, such as kidney failure and rheumatoid arthritis. Trying to drink water with no filter might cause further kidney damage. (D) [substeps] The best amount of water recommended by experts is 1 gallon a day (2.5 liters) each. Drink bottled water, but you don't need soda, fruit juices, or other non-carbonated beverages; opt for bottled water.
A

[header] How to prevent unauthorized computer access [title] Set up password protection. [substeps] Enable password protection on your computer if it is not already set up. Make sure you are using a personal password you have chosen versus the default password. <sep> (A) When creating your password, be sure to incorporate numbers or special characters to make it difficult for others to guess. Change your password often, at least every 2 months. (B) [title] Ensure no viruses are accessing the computer. [substeps] Disable password protection protected if it is locked. (C) Put some type of recovery code into the bar along the top of the screen, if it is not already enabled. Allow yourself a certain amount of time before attempting to access computer files. (D) This will prevent people from entering your password without permission. [title] Enable online browsing if there is no internet connection.
A

[header] How to breed beef cattle [title] Begin by starting up a beef cow-calf operation. [step] Follow the steps provided in the article linked in this step. [title] Buy your cows and/or your herd bull. <sep> (A) [title] Cut the small sections of fat off the calf's legs to allow the milk to settle into the calf's bladder. [title] Clean and cut the meat off the tail by pressing it off with a small shear. (B) [step] Buy the quality of cows that meet your standards, as far as having a good breeding herd is concerned. [substeps] Your herd bull should be selected to improve your herd, as he will be providing half of the genetic potential of your calf crop. (C) [step] You will want a properly fitted beef cow. Just be sure your cows or bulls are correctly fitted. (D) [step] Here are the basic techniques which are used to start the operation : [substeps] Cut a piece of leather about 12 inches thick and weigh 25 lb (39.1 kg). Place a piece of leather over the middle space where you want to work.

B

