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: Happy ending. Sentence 1: Sam took his pet bird out for a walk. Sentence 2: She couldn't fly, but when the wind gusted, she was lifted in the air. Sentence 3: The bird was swept up into the top of a tall tree. Sentence 4: Devastated, Sam waited at the foot of the tree all day. Choices: a. From that day i didn't wear my ring anymore and hide it on a box. b. As dusk fell, the bird grew scared and fluttered down to Sam's feet.
a