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: increasing heat causes thermal expansion, Fact2: Thermal burns are caused by exposure to heat., Question: what can cause burns? (A) epidermis and dermis (B) Pesticides (C) Males and females (D) rays or beams (E) fossil fuels (F) Electrical energy (G) thermal expansion (H) harmful substances
Output:
G