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: a stem is used to store water by some plants, Fact2: Every plant and animal needs water to survive., Question: What do stems help plants do? (A) reproduce (B) survive (C) expire (D) stay warm (E) growth (F) move (G) support (H) hide
A:
B