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").

Fact1: Organisms cluster around hydrothermal vents in the ocean floor., Fact2: Large lobsters are found here scavenging the ocean floor., Question: Organisms cluster around vents found in the same place as what? (A) Dolphins (B) our planet (C) allow growth (D) Birds (E) our star (F) Mountains (G) Manatees (H) Lobsters
H