Definition: 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").
Input: Fact1: Vesicle transport requires energy, so it is also a form of active transport., Fact2: Synaptic vesicles glutamate transporter 5., Question: Glutamate transport requires what? (A) chemicals (B) flavoring (C) glucose (D) energy (E) MSG (F) Energy. (G) chop sui (H) oxygen
Output:
D