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: energy is used for heating a building by a heating system, Fact2: Faculty offices are also in the building., Question: What contains energy to raise the temperture of an office? (A) chemical messengers (B) peachleaf willow (C) deoxyribonucleic acid (D) cooling system (E) swimming pool (F) heating system (G) gym (H) organic molecules
[EX A]: F

[EX Q]: Fact1: Infancy is the period of most rapid growth after birth., Fact2: Development means to get better, growth means to get bigger., Question: What is the period of most rapidly getting bigger after birth? (A) 86400 (B) infancy (C) adult (D) a hosta (E) pregnancy (F) adulthood (G) eight (H) angiosperm
[EX A]: B

[EX Q]: Fact1: Earthworms are important deposit feeders that help form and enrich soil., Fact2: Deposit feeders ingest sediment and extract food particles., Question: What happens when Earthworms ingest sediment and extract food particles? (A) The soil is unhealthy (B) Plant growth is reduced (C) heat produced (D) major threat to health (E) The earthworm reproduces (F) competing for resources (G) The earthworm dies (H) The soil is enriched
[EX A]:
H