Q: 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: grave. Sentence 1: The man dug a grave. Sentence 2: He put his dead dog in it. Sentence 3: He filled it in with dirt. Sentence 4: He planted a tree on top of it. Choices: a. He thought of the dog when he saw the tree. b. Andy was so happy, because they beat the other team!
A:
b