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.

Example Input: How do plants get water and minerals?  
 (A) absorbed from the soil though the roots (B) absorbed from the soil through the stem (C) absorbed from the air through the flowers (D) absorbed from the air through the leaves
Example Output: A

Example Input: In the morning, students observed puddles of water all over the playground. What would best explain why the playground was dry in the afternoon?  
 (A) Animals drank the water. (B) The wind stopped blowing. (C) Someone dried the puddles. (D) The water evaporated during the day.
Example Output: D

Example Input: Sandstone and all other types of sedimentary rock are made up of particles. The source materials of these particles consist of  
 (A) fragments that broke off of older rocks. (B) magma that cooled deep below a volcano. (C) gases that condensed in the atmosphere. (D) vegetation that decayed in thick layers.
Example Output:
A