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: As water cools to a temperature of zero degrees Celsius and forms ice, water molecules tend to  
 (A) move farther apart. (B) vibrate rapidly. (C) flow more randomly. (D) gradually expand.

Output: A


Input: Consider Input: Planting certain crop plants in a field causes a disruption of the natural nitrogen cycle in that field. Which outcome would this disruption most DIRECTLY cause in the field over time?  
 (A) topsoil erodes (B) soil nutrients decrease (C) desert conditions appear (D) atmospheric carbon dioxide increases

Output: B


Input: Consider Input: Samuel investigated the effect of temperature on the growth of snapdragons. He recorded the results from the investigation and found that snapdragons do not grow well in low temperatures. What is the purpose of this conclusion in the scientific process?  
 (A) It helps to organize the data. (B) It helps to evaluate the hypothesis. (C) It helps to prepare for an investigation. (D) It helps to collect information from observations.


Output: B