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 an example of a chemical reaction?  
 (A) Vinegar added to baking soda forms a gas. (B) Water evaporates into air. (C) Sugar dissolves in water. (D) Corn kernels are crushed to form flour.

Output: A


Input: Consider Input: Which is the best tool for measuring the temperature of lake water?  
 (A) Meter stick (B) Balance (C) Graduated cylinder (D) Thermometer

Output: D


Input: Consider Input: Between 40 and 50 million years ago, the landmass on the Indian plate collided with the landmass on the Eurasian plate. What formed when these landmasses collided?  
 (A) the Grand Canyon (B) the Great Plains (C) the Himalayan Mountains (D) the Mariana Trench


Output: C