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: global warming is when worldwide temperature increases, Fact2: Global warming is caused by carbon dioxide trapped in the atmosphere., Question: What does carbon dioxide cause? (A) skateboards (B) Greenhouse gases (C) Worldwide temperature increase (D) major threat to health (E) direct damage to the lungs (F) running (G) a lot of human deaths (H) Temperature decrease
[A]: C

[Q]: Fact1: Earthworms are important deposit feeders that help form and enrich soil., Fact2: Tulips perform best in a sandy, organically enriched soil., Question: Earthworms help form and add what to soil (A) Sediment (B) organic material (C) Converting waste. (D) bacteria (E) heat (F) Chemical energy (G) grass (H) acidity
[A]: B

[Q]: Fact1: a solar panel converts sunlight into electricity, Fact2: Energy of sunlight is more concentrated near the equator., Question: Where would solar panels be most effective? (A) Near the equator (B) to move people (C) mouth of rivers (D) Southern Hemisphere (E) near the shoreline (F) Near the Tropic of Cancer (G) Nurseries of the ocean. (H) Northern Hemisphere
[A]:
A