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").

Q: Fact1: Male dogs use pheromones in urine to mark their territory., Fact2: Pheromones are natural aphrodisiacs., Question: What do male dogs use in urine to mark their territory? (A) Natural aphrodisiacs (B) competing for resources (C) Tails (D) Urine  cleaner (E) Something coming from a gland (F) Chemical energy (G) an area swollen with pus (H) Chew toys

A: A
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Q: Fact1: All plants have a characteristic life cycle that includes alternation of generations., Fact2: Plants have chlorophyll and an alternation of generations ., Question: What have chlorophyll and a characteristic life cycle? (A) vases (B) Fungi (C) models (D) Trees (E) Conifers (F) plants (G) seeds (H) greenhouses

A: F
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Q: Fact1: Pregnancy is the carrying of one or more offspring from fertilization until birth., Fact2: Pregnancy is another word for gestation., Question: What is gestation? (A) three stages after birth (B) period after birth (C) giving birth (D) birth control (E) last stage before adulthood (F) an aborted pregnancy (G) sexually maturity (H) carrying offspring to birth

A:
H
****