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: 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: Sponges have specialized cells called collar cells., Fact2: Flagellum of collar cell cause current to pass over collar and food is collected., Question: Which aspect of a sponge's cells allow it to collect food? (A) the cervix (B) teeth (C) flagellum (D) cartilage (E) plasma (F) osculum (G) tissue (H) potassium
[EX A]: C

[EX Q]: Fact1: a vehicle is used for transportation, Fact2: Most bigger cities require efficient and adequate public transport systems., Question: What do most bigger cities require? (A) fluoride (B) slides (C) vehicles (D) desire (E) specialized (F) backbones (G) tap water (H) religion
[EX A]:
C