Detailed Instructions: 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").
Q: Fact1: erosion of soil has a negative impact on the environment, Fact2: Cattle can cause soil erosion., Question: what can have a negative impact on the environment? (A) toxins (B) trees (C) Cars (D) cattle (E) tar (F) nutrients (G) h2o (H) coal
A:
D