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: a compass is used to navigate oceans, Fact2: And to the east is the Atlantic Ocean., Question: what is a compass used to navigate? (A) density (B) lamphreys (C) marine (D) outer space (E) their speed (F) Antarctica (G) non-magnetic planets (H) the Atlantic
[EX A]: H

[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: friction causes the speed of an object to decrease, Fact2: And whenever there is friction, energy is lost., Question: What is lost as the speed of an object decreases? (A) cartilage (B) density (C) alveoli (D) light (E) energy (F) smell (G) sunlight (H) mass
[EX A]:
E