Given the task definition, example input & output, solve the new input case.
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.
Example: Title: Marcus Buys Khakis. Sentence 1: Marcus needed clothing for a business casual event. Sentence 2: All of his clothes were either too formal or too casual. Sentence 3: He decided to buy a pair of khakis. Sentence 4: The pair he bought fit him perfectly. Choices: a. Marcus was happy to have the right clothes for the event. b. He left in a huff for having his ideas mocked.
Output: a
Marcus is buying clothes for a business event and not presenting an idea.

New input case for you: Title: Photo. Sentence 1: My coworker Samantha is recovering from a broken relationship. Sentence 2: She had an affair which ended when the man's wife found out. Sentence 3: The man has cut off all contact with Samantha. Sentence 4: Samantha retaliated by posting photos of them on Facebook. Choices: a. The latest photo is of them at Lincoln Center in NYC. b. Now Bill is in great shape!
Output:
a