Definition: In this task, you are given two facts, and a multiple-choice question. Based on the given facts, answer the question with index of the correct option (e.g, "A").
Input: Fact1: Cells are the basic units of the structure and function of living things., Fact2: An organism is a living thing., Question: What makes up the basic structure and function of all organisms found on Earth? (A) organs (B) cells (C) plants (D) fungi (E) bone structure (F) trees (G) Earth molecules (H) Fat
Output:
B