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").

[EX Q]: Fact1: Gymnosperms are vascular plants that produce seeds in cones., Fact2: Plants reproduce by seeds and rhizomes., Question: What do gymnosperms use to reproduce? (A) roots (B) cones (C) ovaries (D) family (E) CO 2 (F) instinct (G) embryos (H) Mitosis
[EX A]: B

[EX Q]: Fact1: telephones are used for communication by two people by transmitting sound, Fact2: And the sound of their voice becomes important as well., Question: What is transmitted with telephones? (A) voice (B) copper (C) waves (D) smell (E) cancer (F) energy (G) HIV (H) power
[EX A]: A

[EX Q]: Fact1: Courtship is behavior that is intended to attract a mate., Fact2: Moose courtship begins in autumn., Question: When do moose begin to attract mates? (A) heat or cold (B) in autumn (C) colors (D) Change colors (E) it needs them (F) adding heat (G) Winter (H) competition
[EX A]:
B