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.

[Q]: Which statement about plant and animals cells is true?
(A) Both have a cell wall to give them support. (B) Both have a large vacuole to store water. (C) Both use mitochondria to produce energy. (D) Both use chloroplasts to store energy.
[A]: C

[Q]: A student is asked to bring something that feels rough to class. Which would be BEST for him to bring?
(A) Pillow (B) Marble (C) Sandpaper (D) Trading card
[A]: C

[Q]: Which two systems of the body are interacting when a runner sprains his ankle?
(A) the nervous system and the digestive system (B) the digestive system and the circulatory system (C) the respiratory system and the nervous system (D) the muscular system and the nervous system
[A]:
D