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: Skin color is another polygenic trait., Fact2: Rather, such complex characteristics are polygenic, i.e., they are influenced by multiple genes., Question: What is influenced by multiple genes? (A) skin color (B) diphtheria (C) a hosta (D) Flowers (E) the environment (F) some anthozoans (G) ecosystems (H) Rolex
A:
A