You will be given a definition of a task first, then some input of the task.
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 that live in marine biomes must be adapted to the salt in the water., Fact2: Some familiar examples of biomes include tundra, desert, chaparral, and open ocean., Question: Organisms that live in the ocean are adapted to (A) purified water (B) the environment (C) Absorb light (D) air (E) survival (F) salt water (G) murky water (H) produce light
Output:
F