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: Some people carry a mutated allele of a particular gene that makes them resistant to HIV infection and AIDS. Which best describes this type of mutation?  
 (A) beneficial (B) asexual (C) harmful (D) unicellular

Output: A


Input: Consider Input: In an experiment studying phototropism, students grew bean plants in labeled cardboard milk cartons. Afterward, the plants and soil were properly discarded. Which instruction line BEST conserves the remaining resources?  
 (A) recycle the markers, reuse the milk cartons (B) reuse the markers, discard the milk cartons (C) discard the markers, reuse the milk cartons (D) reuse the markers, recycle the milk cartons

Output: D


Input: Consider Input: A student wrote the following claim on a homework assignment: "Eukaryotic cells need more lipids than prokaryotic cells." Which statement below provides the BEST support for her claim?  
 (A) Eukaryotic cells have a nucleus. (B) Eukaryotic cells make up multicellular organisms. (C) Eukaryotic cells contain membrane-bound organelles. (D) Eukaryotic cells perform cellular respiration.


Output: C