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.
--------
Question: Which plant is grown for food?  
 (A) Rice (B) Tobacco (C) Orchid (D) Cotton

Answer: A


Question: Which of the following happens in our solar system?  
 (A) Earth revolves around the sun once per day. (B) The moon revolves around Earth once per day. (C) Earth revolves around the sun once per year. (D) The moon revolves around Earth once per year.

Answer: C


Question: Which measurement is the most accurate way to describe the distance between the Sun and its nearest neighboring star?  
 (A) 4 light-years (B) 400 light-years (C) 4 billion kilometers (D) 400 billion kilometers

Answer:
A