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: planting trees has a positive impact on an ecosystem, Fact2: An ecosystem contains many habitats., Question: doing what with trees has a positive impact on habitats (A) making tables (B) chopping down (C) planting (D) watershed (E) earth (F) bloom time (G) growth (H) timbering
[EX A]: C

[EX Q]: Fact1: Rivers are usually larger than streams., Fact2: Watersheds are creeks, streams and rivers., Question: What is a river also? (A) storing water (B) loose soil (C) dangerous (D) fertile (E) more abundant (F) watershred (G) body water (H) kinetic
[EX A]: F

[EX Q]: Fact1: infection can cause bodily tissues to swell, Fact2: Inflammation causes the tissues that line the airways to swell and produce extra or thick mucus., Question:  _can cause inflammation (A) temperature (B) pathogens (C) steroids (D) arteries (E) dilation (F) Infection (G) disease (H) symptoms
[EX A]:
F