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: Mutations may change the structure of a chromosome or just change a single nucleotide., Fact2: DNA is made up of nucleotides., Question: What can change the structure of DNA? (A) Mutations (B) rays or beams (C) Genes (D) radiation (E) DNA (F) Smoking (G) Microscope (H) Chemicals
Student:
A