You will be given a definition of a task first, then some input of the task.
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").

Fact1: radioactive dating is used to determine the age of fossils, Fact2: Fossil Petrified wood is the state fossil., Question: What can be determined with radioactive dating? (A) the age of algae (B) the age of flowers (C) the age of mammals (D) basic building blocks of life (E) dead organisms (F) movement of tectonic plates (G) the age of petrified wood (H) objects that have mass
Output:
G