Q: 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: a scale is used for measuring weight, Fact2: All weights are in kilograms., Question: What can measure kilograms? (A) a scale (B) a ruler (C) Fractions (D) lamphreys (E) a-a gradients (F) animals (G) humans (H) telescopes
A:
A