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: Plastics are made from petroleum and produce toxic waste., Fact2: Plastics are a type of petrochemical, that is, they are created from petroleum., Question: What is an example of a petrochemical? (A) LEDs (B) NaCl (C) vinegar (D) Plastic (E) a stove (F) an object (G) gasoline (H) herbicide
Output:
D