Given the task definition and input, reply with output. 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: Skin color is a polygenic trait., Fact2: Polygenic inheritance Polygenic traits are controlled by an unknown number of genes., Question: Where does skin color come from? (A) tissue made of chondrocytes (B) Nobody knows (C) rapid changes occur (D) It's a choice (E) Exposure to oxygen and water (F) It's randomized (G) It's inherited from genes (H) last stage before adulthood
G