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". 

Ex Input:
[header] How to treat ingrown eyelids in dogs [title] Look for squinting. [step] Squinting is an easily recognized sign of eye irritation. Your dog may squint if it feels like there's something in the eye that it can't get out. <sep> (A) In this case, the ingrown eyelid is causing the eyelashes to rub directly against the eye. If you can't tell if your dog is squinting, compare the size of your dog's irritated eye to the other one. (B) This is not always an indication of eye irritation. It's often the case that tears will build up within the eyelids, which can cause the eyes to appear unfocused and dry. (C) It may also display its eyelids twitching or blinking repeatedly. Some dog owners find it embarrassing to have their dog squint because of its inability to see. (D) Visit your vet if you notice : [substeps] Squinting irritation blockage of the eye. This is the case with retinitis, which causes squinting.

Ex Output:
A


Ex Input:
A man sitting on a bucket by some snow drinks a beer. He speaks to the camera. he <sep> (A) is shoveling the snow. (B) is shown running around a field demonstrates how to do curling. (C) puts down his beer and grabs a fishing pole and begins to fish. (D) holds a bottle of vodka when drinking the beer.

Ex Output:
C


Ex Input:
[header] How to limbo [title] Grab a long pole. [step] Traditionally, people played limbo with a broom, but any long rod will work. For quick solutions, try using a wrapping paper roll, curtain rod, pool noodle, or a smooth stick from outside. <sep> (A) Either safe plastic or craft paper will work. [substeps] If you happen to be playing outside, try using the ocean to play limbo, which literally means just use water to swim. (B) Ropes, cables, and similar items can also work as long as you have people to hold them tight. [title] Have two people hold the pole parallel to the ground. (C) Once you've chosen a stick, hold the stick straight, but slightly out of arm's reach, so that your arm is above your head. [substeps] Start at either a long pole and a stake (with a long pole used for safety purposes). (D) Alternatively, you can make the game more structured by laying up a team of players. Find a location at least 20 feet (4.9 m) away from any walls or floors.

Ex Output:

B


