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.
Q: Title: Found Dog. Sentence 1: Tim found a stray dog. Sentence 2: It didn't have a collar. Sentence 3: He wound up taking it to a pound. Sentence 4: Tim later found a poster searching for it. Choices: a. Tim called and told them where it was. b. After the dinner John and Marsha felt like friends again.
A:
a