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 cactus stem is used for storing water, Fact2: Cactus species often grow in hot, dry deserts., Question: Where do plants that grow in hot, dry deserts store water? (A) In the stem (B) In the spines (C) peachleaf willow (D) scarce resources (E) bamboo (F) In the branches (G) cactuses (H) In the leaves
A