Given the task definition and input, reply with output. 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 seamlessly connects with the rest of the story, indicating your choice as 'a' or 'b'. If both sentences are plausible, pick the one that makes more sense.

Title: A Navy Seal. Sentence 1: Jacob wanted to be a Navy Seal. Sentence 2: So he enrolled and the Navy and applied. Sentence 3: The problem was that Jacob was not to smart. Sentence 4: Jacob was in great shape though. Choices: a. Jacob didn't make it because he couldn't pass the written test. b. We are definitely thinking about going again next year.
a