You will be given a definition of a task first, then some input of the task.
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: The Old Days. Sentence 1: Marie was a painter when she was younger. Sentence 2: Now she was old and worked as a telemarketer. Sentence 3: One day, she told a young coworker about her old artistic days. Sentence 4: It made her melancholy to remember when she'd painted. Choices: a. She dreamed that night she was a famous painter. b. After Ace lost, and the stranger left, Ace realized he'd been hustled.
Output:
a