You will be given a definition of a task first, then some input of the task.
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: Wrong stroller. Sentence 1: An old man in a German supermarket stopped me. Sentence 2: He told me my baby's stroller would deform my baby's spine. Sentence 3: I told him the stroller was very common in America, where I am from. Sentence 4: He told me Donald Trump was a Vulcan. Choices: a. I left the store, wondering what on earth that was supposed to mean. b. Jerry was very pleased with the glossy finish of the shellac.
Output:
b