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: webbed feet are used for moving faster through water by aquatic animals, Fact2: All ducks have webbed feet., Question: Why do ducks move faster through water? (A) Due to their coloring (B) Due to their feet (C) To keep their body heat. (D) Due to their diet (E) animals with backbones (F) Males and females (G) it keeps an organism warm (H) Due to their quacks
B