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: Humans have collected and grown mushrooms for food for thousands of years., Fact2: Yeast and mushrooms are types of fungus., Question: What have humans collected and grown for thousands of years? (A) Organic compounds (B) types of coral (C) types of ferns (D) bioaerosols (E) Most plants (F) types of fungus (G) types of pine trees (H) peachleaf willow
[EX A]: F

[EX Q]: Fact1: a fire requires oxygen to burn, Fact2: In the vacuum of space, there's no oxygen to burn., Question: Where is fire impossible? (A) evaporation (B) In space (C) A computer (D) uncontrolled (E) Inside a car (F) On television (G) summer end (H) On a mountain
[EX A]: B

[EX Q]: Fact1: pollination requires pollinators, Fact2: Bees are effective pollinators., Question: Bees are necessary to (A) haploid plants (B) genetic diversity (C) spread flower seeds (D) prevent evolution (E) Reproduction (F) eat weeds (G) chew flowers (H) important habitats
[EX A]:
C