Detailed Instructions: In this task, you're given the title of a five-sentence story, the first four sentences, and two options for the fifth sentence as a and b. Your job is to pick the sentence option that does not connect with the rest of the story, indicating your choice as 'a' or 'b'. If both sentences are plausible, pick the one that makes less sense.
Q: Title: Raining Hike. Sentence 1: Jessie was in the middle of a long hike. Sentence 2: Suddenly it started pouring down rain. Sentence 3: She had to take cover under a tree trunk. Sentence 4: She waited there for thirty minutes as it rained. Choices: a. Finally things cleared up and she was able to finish her hike. b. Luckily, she seemed to get a decent passing grade.
A:

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
b