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: Chemical bonds form when substances react with one another., Fact2: Chemical Bonding A chemical bond is the sharing or transfer of electrons., Question: What is shared to form a bond? (A) Energy (B) light energy (C) Energy. (D) neutrons (E) protons (F) electrons (G) nucleus (H) photons
F