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").
Q: Fact1: Antibodies are large, Y-shaped proteins that recognize and bind to antigens., Fact2: ALL immunogens are antigens., Question: Antibodies are large, Y-shaped proteins that recognize and bind to: (A) humans (B) A Greek letter (C) bones (D) the skin (E) animals (F) inorganic items (G) immunogens (H) water
A:
G