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: Dilation occurs when cell walls relax., Fact2: Relaxation promotes relaxation and easing of tension., Question: What occurs when the tension of cell walls are eased? (A) Sleep (B) exercise (C) friction (D) Exfoliation (E) recovery (F) dilation (G) sweating (H) murmur

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
F