You are given a question and some answer options (associated with "A", "B", "C", "D"). You should choose the correct answer based on commonsense knowledge. Avoid answering questions based on associations, the set of answers are chosen deliberately to capture common sense beyond associations. Do not generate anything else apart from one of the following characters: 'A', 'B, 'C', 'D', 'E' and only give one answer for each question.
One example: Where would you find magazines along side many other printed works?
(A)doctor (B)bookstore (C)market (D)train station (E)mortuary
Solution is here: B
Explanation: libraries contains magazines and many other printed works.

Now, solve this: How can people fulfill their own calorie requirements?
(A)compete with each other (B)feed themselves (C)feel lonely (D)talk to each other (E)ask a doctor
Solution:
B