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: 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
[EX A]: A

[EX Q]: Fact1: Earth 's tilt on its rotating axis causes seasons to change, Fact2: Weather changes from season to season., Question:  Earth 's tilt on its rotating axis causes changes in what (A) weather (B) sunlight (C) Joules (D) wind (E) heat (F) climate (G) energy (H) earth
[EX A]: A

[EX Q]: Fact1: Sperm had to swim from male to female reproductive organs for fertilization., Fact2: Gametes in males are called sperm, and in women commonly referred to as eggs., Question: What swims from male to female reproductive organs in fertilization? (A) ovaries (B) barnacles (C) fur seals (D) eggs (E) gastropod shells (F) male gametes (G) kinetic energy (H) female gametes
[EX A]:
F