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". 

Input: Consider Input: [header] How to buy a wood burning stove [title] Consider your heating needs by evaluating the size of your home. [step] You will need to determine the heat load necessary to maintain the square footage of the area you want heated. Heat load is measured in btus, or british thermal units. <sep> (A) Inquire about btus and thermal units using online resources. [substeps] Btus heat packs can be found at home improvement stores, department stores, and some gas stations. (B) To determine how much heat you need, pay attention to the dimensions of each room you intend to fire in. [substeps] The larger the square footage, the larger your fire seats will need to be. (C) You will need 25 to 30 btus per square foot. [substeps] Measure each room to be heated with measuring tape. (D) Btus are rated from 2000-1000. Btus can be changed or altered depending on the size of your home.

Output: C


Input: Consider Input: A person is seen riding around on roller blades and performing a grind on a bar. several more clips <sep> (A) are shown of the boy riding around on the equipment as well as sit on the floor and play pool. (B) are shown of people driving around on machines with one person riding in front. (C) are shown of the athletes performing tricks in various stretches as well as throwing a ball off into the distance. (D) are shown of the person performing grinds with roller blades as well as other flips and tricks.

Output: D


Input: Consider Input: [header] How to clean plastic containers [title] Remove the lid from the container. [step] After you pop it open, check to make sure there are no remnants of food left inside. Give the container a quick preliminary rinse with hot water. <sep> (A) Then, pour boiling water into the container to rinse it thoroughly. [substeps] If you are cleaning small containers, this is a good time to simply squeeze out the dried or yucky food inside. (B) If your container does have any raw food in it, wash it off with hot water and a clean rag. [title] Dump all food out of the container into a bowl and rinse it thoroughly. (C) Drain and shake out the excess water and place the container on the kitchen counter. [substeps] If there's any dried or sticky residue inside the container, it may help to wipe it out with a paper towel before you begin cleaning. (D) [substeps] Once it's clean, shake it to check for any remaining traces of food or debris, then spray the container down with a solution of household disinfectant. [title] Dump the container in a storm-proof bucket to drain out any leftover liquid.


Output: C


