Definition: 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").
Input: Fact1: a tape measure is used to measure length, Fact2: Lengths A length is a measure of distance., Question: What does a tape measure do? (A) observe appearance (B) measure weight (C) measure density (D) measure distance (E) focusing a lens (F) objects that have mass (G) lowered energy cost (H) duplicate itself
Output:
D