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: Mollusks reproduce sexually., Fact2: Mollusks are the dominant invertebrate., Question: what reproduces sexually? (A) A compound that donates proton (B) spread flower seeds (C) They have webbed feet (D) Plant reproduction (E) By wind and rain (F) passenger pigeons (G) the dominant invertebrate (H) Something found in San Francisco
[EX A]: G

[EX Q]: Fact1: Pneumonia may be caused by an infection or injury of the lungs., Fact2: Mammals breathe air with lungs., Question: What may be caused by an infection or injury of the organs used to breathe air? (A) Toxicity (B) smoking (C) fertilization (D) pneumonia (E) a broken leg (F) oxygenation (G) Dehydration (H) the skin
[EX A]: D

[EX Q]: Fact1: Female monotremes lack a uterus and vagina., Fact2: Examples of monotremes are the Platypus and Echidna., Question: The female platypus and echindna does not have a vagina and? (A) Uterus (B) expelled (C) organ (D) abrasion (E) alveoli (F) reproduce (G) state (H) Epidermis
[EX A]:
A