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.

[Q]: Title: Don't tease me. Sentence 1: Mark made a grilled cheese sandwich while Ben, his dog, watched. Sentence 2: Knowing that Ben wanted a bite, Mark pretended to give it to Ben . Sentence 3: Barely missing it each time, Ben, frustrated, jump at Mark's face. Sentence 4: Because Ben startled him, Mark dropped the sandwich onto the floor. Choices: a. Ben happily ate the sandwich as Mark watched. b. Johnny was happy with his bargain shopping.
[A]: b

[Q]: Title: Unknown Friend. Sentence 1: Tom got a friend request on Facebook. Sentence 2: He couldn't figure out who it was. Sentence 3: Tom decided to message them. Sentence 4: They talked to a bit before Tom figured it out. Choices: a. It was an advertising bot. b. However, it stained the table pink.
[A]: b

[Q]: Title: French. Sentence 1: In third grade Ana started learning French. Sentence 2: The teacher found them French pen pals to help them learn. Sentence 3: Ana kept up correspondence for several years. Sentence 4: She practiced her French and grew very skilled. Choices: a. When she graduated high school, her French grade was A+! b. We ate them and enjoyed them while watching a movie.
[A]:
b