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: Which disease is a result of abnormal cell division?  
 (A) AIDS (B) cancer (C) chicken pox (D) common cold
Example Output: B

Example Input: Russell wants to observe changes in nature over the next few months. What can a thermometer help Russell investigate?  
 (A) rainfall amounts each week (B) tiny organisms in pond water (C) the high temperatures each day (D) the amount of growth in a plant
Example Output: C

Example Input: A dung beetle is an insect that gathers waste from animals, rolls it into a compact ball, lays eggs in it, and buries it in the soil. This gives the eggs a warm, safe place to hatch and provides a food source for the developing larvae. Which impact does the dung beetle most likely have on its ecosystem?  
 (A) It helps return nutrients to the soil. (B) It makes animal waste harder to degrade. (C) It causes an unhealthy accumulation of animal waste. (D) It depletes nutrients from the soil to benefit its young.
Example Output:
A