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 compass is used to navigate oceans, Fact2: Map navigators tend to use Grid North, or Magnetic north as as default., Question: What does a compass find? (A) Differences in speed (B) needle (C) well-rounded peaks (D) magnetic north (E) 295 degrees Kelvin (F) unicellular organisms (G) Mars (H) roses
A:
D