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.
--------
Question: Which set contains kingdoms that contain only heterotrophs?   
 (A) Protists, Fungi (B) Bacteria, Animals (C) Plants, Fungi (D) Animals, Fungi

Answer: D


Question: Animals get energy for growth and repair from  
 (A) soil (B) food (C) water (D) air

Answer: B


Question: Which of these is an organism that is unicellular?  
 (A) virus (B) amoeba (C) mushroom (D) ant

Answer:
B