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". 

Example Input: Two men are talking in a news room. some people <sep> (A) are riding bikes in snowy terrain. (B) have gathered outside to watch. (C) are kayaking in the river. (D) are outdoors playing a game in a sandy field.
Example Output: B

Example Input: A grey african parrot walks up to a coffee mug filled with coffee. He takes a drink, then walks away. he <sep> (A) turns around and begins drinking from a different mug. (B) returns and grabs a second cup. (C) comes back and grabs the mug. (D) stares down at the coffee mug.
Example Output: A

Example Input: [header] How to care for a caterpillar [title] Choose the right time of year. [step] The best time to go caterpillar hunting is during the spring and summer, as this is when the majority of moths and butterflies will lay their eggs. However, some species-such as the woolly bear caterpillar-emerge in autumn. <sep> (A) Pick a time of year when the insects are in good spirits, such as early summer or early fall. [title] Draw your caterpillar to health. (B) Winter is the only time of year when caterpillars cannot be found. [substeps] In the wild, caterpillar typically have a 2% survival rate, which means that for every 100 eggs a female butterfly or moth lays, only two will survive to maturity. (C) Do not wait until spring to harvest the caterpillar. [substeps] A major threat to fly with a caterpillar is the possibility of flies directly into your eye. (D) This specific time of year is a good one because the caterpillar cannot produce eggs for a while. Find a time when your caterpillar is still hungry and cool.
Example Output:
B