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.

Ex Input:
Which form of energy is found in food?  
 (A) chemical (B) electrical (C) sound (D) mechanical

Ex Output:
A


Ex Input:
Which describes a material that is not a food?  
 (A) It stores energy but not nutrients. (B) It does not store energy or nutrients. (C) It stores energy and nutrients. (D) It does not store energy but stores nutrients.

Ex Output:
B


Ex Input:
Students compare two different rocks. The rocks are both bright and spotted. Which property are the students most likely observing?  
 (A) layers (B) textures (C) colors (D) ages

Ex Output:

C