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: Which is most likely a genetic adaptation of desert plants to survive the hot, dry climate conditions?  
 (A) thin bark (B) waxy leaves (C) leaves that remain all year (D) flowers that bloom all year

Output: B


Input: Consider Input: What type of galaxy is the Milky Way?  
 (A) spiral (B) elliptical (C) irregular (D) oval

Output: A


Input: Consider Input: A research scientist writes a paper on the initial regrowth of a forest after a fire has damaged the entire ecosystem. Which title would be best for the paper?  
 (A) Primary Succession (B) Stable Communities (C) Climax Communities (D) Secondary Succession


Output: D