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: A boy pulls a sweater off over his head. His hair is attracted to the sweater due to  
 (A) a magnetic force (B) a heat transfer (C) a chemical change (D) an electrical charge
Example Output: D

Example Input: During a walk in the woods, Mandy finds a plant structure that had fallen onto the trail. Mandy can tell the object contained seeds, and thinks it came from a flowering plant instead of a conifer. How can she determine if the object came from a flowering plant?  
 (A) by looking for seed coats on the seeds (B) by looking for wing-like structures on the seeds (C) by looking for fruit tissue around the seeds (D) by looking for young sporophytes inside the seeds
Example Output: C

Example Input: A student is given a sample of an unknown liquid to test in the laboratory. The student thinks that the liquid is water. Which of the following physical properties of the sample is most helpful to determine if the liquid is water?  
 (A) color of the liquid (B) mass of the liquid (C) volume of the liquid (D) boiling point of the liquid
Example Output:
D