Instructions: 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.
Input: Title: Mudding. Sentence 1: Ricky was driving his four wheeler through the mud. Sentence 2: Ricky misjudged the depth of an area of mud. Sentence 3: He attempted to ride through the mud. Sentence 4: The four wheeler began to sink down into the mud. Choices: a. His parents came down to comfort him. b. Ricky had to get his friends to pull his four wheeler out of the mud.
Output:
b