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: Lichens are symbiotic organisms made of green algae and fungi. What do the green algae supply to the fungi in this symbiotic relationship?  
 (A) carbon dioxide (B) food (C) protection (D) water

Output: B


Input: Consider Input: Which is a way the agricultural biotechnology industry could have a positive impact on the environment?  
 (A) by producing crops that are virus resistant (B) by making robots to replace large farm machines (C) by reducing the need for countries to import food (D) by increasing the use of wind farms that produce electricity

Output: C


Input: Consider Input: In a city near the ocean, fog often forms on summer mornings. Which of the following statements best explains how this fog forms?  
 (A) Ocean water evaporates and then condenses in the air. (B) Crashing waves spray tiny drops of ocean water into the air. (C) Water runoff moves toward the ocean and collects near the shore. (D) Rain clouds move in from the ocean and evaporate as they reach the shore.


Output: A