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: 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
[A]: B


[Q]: Fact1: Feathers help birds fly and provide insulation., Fact2: Some birds are flightless birds., Question: Why do the flightless have feathers? (A) layers of fat (B) Sublimation (C) it needs them (D) warm-blooded (E) Air conditioning (F) Radiation (G) Insulation (H) protect them
[A]: G


[Q]: Fact1: Plastics are made from petroleum and produce toxic waste., Fact2: Plastic is a big contributor to landfill waste., Question: products made from what are a big contributor to landfill waste (A) burning coal (B) acetic acid (C) tin (D) hydrocarbons (E) brass (F) Pesticides (G) petroleum (H) recyclables
[A]:
G