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:
To which group does an animal belong if it lays eggs and has scales and gills?  
 (A) amphibian (B) bird (C) fish (D) reptile

Ex Output:
C


Ex Input:
Which describes a specific characteristic necessary for survival in the desert?  
 (A) conserving water (B) hiding from predators (C) hibernating for long periods (D) producing many offspring

Ex Output:
A


Ex Input:
In order for rocks to be classified as igneous, the rocks must  
 (A) solidify at the surface of Earth. (B) be eroded and deposited in layers. (C) be formed from magma. (D) change form when pressure is applied.

Ex Output:

C