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").
Q: Fact1: a balance is used for measuring mass of an object, Fact2: Beam balances, like a seesaw, measure an unknown mass by comparison to known masses., Question: An object that can be used for measuring mass of an object is similar to what playground item? (A) forces (B) Slide (C) barrel (D) Seesaw (E) Merry-go-round (F) rockets (G) Monkey bars (H) matter
A:
D