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: Sporangia produce spores that develop into tiny, heart-shaped gametophytes., Fact2: All gametophytes are haploid., Question: Sporangia produce spores that are what? (A) dense (B) haploid (C) revolving (D) seeds (E) grow (F) white (G) infected (H) fertile
B