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: Flowing water can slowly dissolve carbon in sedimentary rock., Fact2: Rivers and streams are bodies of fresh, flowing water., Question: What can slowly dissolve carbon in sedimentary rock? (A) hydrocarbons (B) acetic acid (C) precipitation (D) evaporation (E) rivers and streams (F) puddles (G) ponds (H) nitrogen
[A]: E

[Q]: Fact1: decomposition increases amount of organic matter in soil, Fact2: Fungi are involved in decomposition, as well., Question: What can help increase the amount of organic matter in soil? (A) Fungi (B) mussels (C) pine (D) worms (E) animals (F) Enzymes (G) solutes (H) trees
[A]: A

[Q]: Fact1: Producers make food from inorganic molecules., Fact2: Autotrophs absorb sunlight energy and transfer inorganic mineral nutrients into organic molecules., Question: What do producers turn sunlight into? (A) energy (B) apples (C) heat (D) paper (E) drinks (F) waste (G) inorganic goods (H) food
[A]:
H