Given the task definition and input, reply with output. 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: water vapor cooling causes that water vapor to condense, Fact2: Heat energy is released as the water vapor in the air condenses., Question: Water vapor cooling releases what? (A) heat energy (B) solar energy (C) gas (D) evaporation (E) loose soil (F) scattered light (G) acid (H) Greenhouse gases
A