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.

Input: Consider Input: Marta studied different forms of energy. Which two types of energy travel in waves?  
 (A) light and sound (B) electrical and sound (C) chemical and light (D) chemical and electrical

Output: A


Input: Consider Input: Which are examples of inherited traits?  
 (A) specific beliefs (B) fingerprints (C) memories (D) nose shape

Output: D


Input: Consider Input: At camp, Raj sees a lightning storm. He sees the lightning before he hears the thunder. What does this show?  
 (A) Light moves faster than sound (B) Light moves slower than sound (C) Light and sound move at the same speed


Output: A