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 Q]: Fact1: seeing requires light, Fact2: Vision is our ability to see., Question: What is required for vision? (A) light (B) goggles (C) food (D) smell (E) hormones (F) Protein (G) color (H) hue
[EX A]: A

[EX Q]: Fact1: recycling has a positive impact on the environment, Fact2: Newsprint is recycled into new paper, cardboard, and insulating material., Question: Making cardboard from what has a positive impact on the environment? (A) newsprint (B) bamboo (C) animals (D) heat energy (E) earth (F) less water (G) sunlight (H) an object
[EX A]: A

[EX Q]: Fact1: if an object reflects light toward the eye then that object can be seen, Fact2: Objects are seen by virtue of scattered light., Question: By virtue of what can objects reflects light toward the eye? (A) sunlight (B) scattered light (C) bright light (D) destroyed light (E) sensory neurons (F) Electrical energy (G) flow of electrons (H) speckled light
[EX A]:
B