Given the task definition and input, reply with output. 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").

Fact1: a flower 's purpose is to produce seeds, Fact2: Seeds are mature Ovules ., Question: A flower 's purpose is to produce what? (A) Pollen grains (B) mature ovules (C) genetic material (D) organic molecules (E) Organic compounds (F) spread flower seeds (G) Reproduction (H) genetic diversity
B