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: Phylogeny is the evolutionary history of a group of related organisms., Fact2: Much of evolutionary biology involves the history of organic diversity., Question: Phylogeny is the history and organic diversity of what? (A) unicellular organisms (B) unrelated organisms (C) evolved areas (D) unrelated events (E) one-celled animals (F) trees and flowers (G) related organisms (H) ecosystems
[EX A]: G

[EX Q]: Fact1: Rivers are usually larger than streams., Fact2: Watersheds are creeks, streams and rivers., Question: What is a river also? (A) storing water (B) loose soil (C) dangerous (D) fertile (E) more abundant (F) watershred (G) body water (H) kinetic
[EX A]: F

[EX Q]: Fact1: Brain cells die quickly if their oxygen supply is cut off., Fact2: Many people contend that orgasms are highly intensified when the body is cut off from oxygen., Question: Lack of oxygen can intensify orgasims but a side effect can be? (A) a tree falling (B) forest is destroyed (C) dehydration (D) smoking tobacco (E) Leptospirosis (F) negative (G) brain cells die (H) massive damage
[EX A]:
G