Given the task definition and input, reply with output. 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 does not connect with the rest of the story, indicating your choice as 'a' or 'b'. If both sentences are plausible, pick the one that makes less sense.

Title: Dental Work. Sentence 1: Gary needed extensive dental work. Sentence 2: Gary knew he could not afford the cost of the dental work. Sentence 3: After researching, Gary found a cheaper alternative. Sentence 4: Gary saw that dental work in Mexico was much cheaper that the US. Choices: a. Gary decided he would go to Mexico to get his dental work done. b. When it was time for tryouts, Kyle could hardly wait!
b