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: Plants are the major producers in terrestrial biomes., Fact2: Grasses are very distinctive plants., Question: What is a producer in terrestrial biomes? (A) food (B) Oak (C) mammals (D) flowers (E) earth (F) grass (G) Trees (H) mushrooms
[EX A]: F

[EX Q]: Fact1: powering an electrical device with a battery requires a path for electricity to flow through a closed circuit, Fact2: Electrons flow continuously in a closed circuit., Question: powering an electrical device with a battery requires a path for electrons to what? (A) hydrogen and oxygen (B) spread out (C) electromagnetic energy (D) cut the line (E) flow continuously (F) an electron microscope (G) flood (H) kinetic energy
[EX A]: E

[EX Q]: Fact1: seed dispersal has a positive impact on a plant, Fact2: Moisture levels before planting and flowering have the greatest impact on yield., Question: Seed dispersal has a what on flowering and yield? (A) Reproduction (B) positive impact (C) lack of impact (D) genetic diversity (E) gene flow (F) neutral impact (G) population movement (H) negative impact
[EX A]:
B