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 Input:
Fact1: Centrioles are organelles involved in cell division., Fact2: Mitosis is cell division., Question: What are organelles involved in mitosis? (A) animals (B) Conifers (C) Most plants (D) it needs them (E) graptolites (F) fur seals (G) centrioles (H) sensory neurons

Ex Output:
G

Ex Input:
Fact1: fog is formed by water vapor condensing in the air, Fact2: Water vapor rises into the atmosphere., Question: what does the atmosphere do before turning into fog (A) adapt (B) rest (C) Rise (D) fall (E) cooled (F) snow (G) swirl (H) Lift

Ex Output:
C

Ex Input:
Fact1: All life relies on a relatively narrow range of pH, or acidity., Fact2: Acids and bases are a part of everyday life., Question: what substances are relied on for life? (A) magma (B) plants (C) poison (D) food (E) oxygen (F) fat (G) bases (H) battery acid

Ex Output:
G