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: Dean gets a girl. Sentence 1: Dean the school nerd has been alone his whole life. Sentence 2: He has always dreamed of getting a girl's attention. Sentence 3: While walking home from school he sees a girl who dropped her books. Sentence 4: He helps the girl pick up her stuff. Choices: a. The girl thanks Dean and asks him on a date. b. His blood discolored some of the paint on the car.
Output:
a