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").
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Question: Fact1: soil is formed by rocks eroding, Fact2: Rivers erode the rocks they flow over., Question: What is formed by rivers? (A) fish (B) soil (C) rain (D) bamboo (E) spring (F) clouds (G) kayaks (H) NaCl

Answer: B

Question: Fact1: Rivers are usually larger than streams., Fact2: Fish is available in the rivers and lakes of the district in large quantities., Question: Habitats where fish live in large quantities are usually larger than what? (A) an object (B) Inches (C) crocodiles (D) body water (E) Decibels (F) Weight (G) streams (H) Length

Answer: G

Question: Fact1: erosion causes a river to become deeper and wider, Fact2: Canyon formed as a consequence of river erosion., Question: rivers cut deeper and wider to form what (A) canyons (B) arteries (C) Roads (D) timberlands (E) old growth forests (F) soils (G) Sediment (H) coral reefs

Answer:
A