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: Fertilizers added by farmers to the soil contain high amounts of nitrates. How do fertilizers affect the nitrogen cycle?  
 (A) More nitrates are available for plants to absorb. (B) More nitrates are available for animals to eat. (C) More nitrogen gas is released into the atmosphere. (D) More nitrogen is converted by bacteria into nitrates.

Output: A


Input: Consider Input: Which are examples of inherited traits?  
 (A) specific beliefs (B) fingerprints (C) memories (D) nose shape

Output: D


Input: Consider Input: Dogs have some learned behaviors. Which is most likely a learned behavior in a dog?  
 (A) sniffing to find food (B) panting when it feels hot (C) chasing a squirrel up a tree (D) barking when it wants to go outside


Output: D