Given the task definition and input, reply with output. You are given a science question (easy-level) and four answer options (associated with "A", "B", "C", "D"). Your task is to find the correct answer based on scientific facts, knowledge, and reasoning. Do not generate anything else apart from one of the following characters: 'A', 'B, 'C', 'D'. There is only one correct answer for each question.

Food provides calories needed by the body for energy. However, the body must use energy between meals when food is not consumed. What is the most likely response of the body when more energy is used than the calories consumed provide?
(A) to increase blood flow to the limbs for energy production (B) to release energy from lipids stored throughout the body (C) to transform stored proteins into carbohydrates for energy (D) to contract muscles to create heat energy for the body
B