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: Visiting Grandpa. Sentence 1: Tyler visits his grandpa on Saturday. Sentence 2: He meets grandpa at the nursing home. Sentence 3: They drive to the park. Sentence 4: Grandpa tells stories while they feed ducks. Choices: a. When Kate walked through the door, everyone shouted and cheered. b. Tyler treats grandpa to ice cream before driving home.
a