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: A student is designing a model of the solar system and writing a report. She is trying to be as accurate as possible. Which statement should she include in her report?  
 (A) The distance between the Sun and Earth is measured in light years. (B) Jupiter and Uranus are considered to be terrestrial planets. (C) The asteroid belt is located between Jupiter and Saturn. (D) The orbit of Mars is similar to the orbit of Saturn.

Output: D


Input: Consider Input: What gas in the air do we need to breathe in order to live?  
 (A) nitrogen (B) oxygen (C) carbon dioxide (D) hydrogen (E) water vapor

Output: B


Input: Consider Input: All living organisms have certain needs in order to stay alive. Which is most necessary for both plants and animals?  
 (A) food (B) water (C) chlorophyll (D) carbon dioxide


Output: B