Q: 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: Plants release oxygen during the day but not during the night., Fact2: When it is day the sun is out., Question: When do plants release oxygen? (A) When the sun is out (B) heat produced (C) in the autumn season (D) flow of electrons (E) When there is a full moon (F) During nighttime hours (G) When the stars are out (H) metabolic reaction
A:
A