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: Fresh Salsa. Sentence 1: Craig planted some tomatoes in his backyard. Sentence 2: The tomatoes grew to be Four feet tall. Sentence 3: Many tomatoes grew on his plants all summer. Sentence 4: Craig gave some of the tomatoes to his neighbor. Choices: a. The plane's engines caught on fire and it crashed, killing everyone. b. Craig's neighbor gave him back some fresh salsa.
b