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: In what type of rock would a geologist most likely find evidence of ancient life?  
 (A) sedimentary (B) foliated (C) metamorphic (D) volcanic
Example Output: A

Example Input: When a person speaks, the type of wave produced can be described as all these except  
 (A) transverse. (B) mechanical. (C) compression. (D) longitudinal.
Example Output: A

Example Input: Many cells have a nucleus that contains chromosomes. These chromosomes carry genes that are composed of  
 (A) hormones (B) DNA molecules (C) minerals and water (D) undigested food molecules
Example Output:
B