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 Dog. Sentence 1: Bailey wanted a pet. Sentence 2: She went to the shelter and saw a dog that seemed lonely. Sentence 3: She brought him home and got him settled in. Sentence 4: She fell asleep that night and awoke to a horrible sight. Choices: a. The dog had shredded up her couch! b. It was going to be a great day!
Output:
a