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: radioactive dating is used to determine the age of fossils, Fact2: Radioactive isotopes are commonly used for dating ., Question: Radioactive isotopes are commonly used to do what to the age of fossils? (A) duplicate itself (B) observe it (C) debate them (D) Temperature (E) Time and energy (F) determine them (G) remove them (H) assign them
Student:
F