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 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:
Which animal eats only plants?  
 (A) Cat (B) Dog (C) Lion (D) Rabbit

Ex Output:
D


Ex Input:
Which form of solar radiation causes sunburn?  
 (A) Visible (B) Ultraviolet (C) Infrared (D) X-rays (E) Radio waves

Ex Output:

B