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: An object such as a hammer weighs less on the Moon than on Earth. This is because the Moon has a
(A) thinner atmosphere than Earth. (B) smaller diameter than Earth. (C) stronger magnetic field than Earth. (D) lower mass than Earth.
Example Output: D

Example Input: When a cup of water at room temperature is put in a freezer, the water's state of matter will change from
(A) liquid to gas (B) gas to liquid (C) liquid to solid (D) solid to liquid
Example Output: C

Example Input: Many natural resources are found in Maryland and the surrounding area. Some of these natural resources are renewable and some are nonrenewable. People use both kinds of resources in daily activities. Using natural resources often produces waste products. Which of these natural resources found in Maryland is nonrenewable?
(A) coal (B) soil (C) water (D) wood
Example Output:
A