Detailed Instructions: 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").
Problem:Fact1: increasing heat causes thermal expansion, Fact2: Thermal expansion can cause serious problems., Question: Increasing heat causes what? (A) lower temperatures (B) chemical reaction (C) cooler weather (D) serious problems (E) Evaporation (F) global warming (G) kinetic energy (H) refrigeration
Solution:
D