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: plant reproduction often requires pollen, Fact2: Ferns are vascular plants., Question: what often requires pollen to reproduce? (A) burrs (B) humans (C) trees (D) RNA (E) hummingbirds (F) ferns (G) bees (H) seeds
Solution:
F