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").
Q: Fact1: Tunicates reproduce sexually., Fact2: Tunicates, or sea squirts, are marine organisms covered with a gelatinous tunic., Question: How do sea squirts reproduce? (A) movement (B) competition (C) seeds (D) Sexually (E) evaporation (F) adding heat (G) allow growth (H) grow
A:
D