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: Susie's Walk. Sentence 1: Susie walked to school. Sentence 2: Suddenly, a dog ran out from a yard and began to chase her. Sentence 3: She ran as fast as she could to get away from the dog. Sentence 4: Eventually, the dog caught up to Susie and wanted to be petted. Choices: a. She petted the dog, it went away, and she continued on her way. b. So he practiced for weeks to get better and beat John at basketball.
a