Detailed Instructions: 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").
Problem:Fact1: Cell division is how organisms grow and repair themselves., Fact2: Humans are complex organisms., Question: what uses cell division to grow and repair themselves? (A) animals (B) humans (C) plants (D) trees (E) volume (F) battery cells (G) ferns (H) density
Solution:
B