Teacher: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").
Teacher: Now, understand the problem? Solve this instance: Fact1: Roundworms make up the phylum Nematoda., Fact2: Also, nematoda and rotifera are important groups contributing to soils., Question: what contributes to soils? (A) roundworms (B) humans (C) rainfall (D) cacti (E) bacteria (F) weathering (G) viruses (H) Most plants
Student:
A