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: Stolen. Sentence 1: On day I was on a very crowded metro system. Sentence 2: My purse was very small and on the side of my body. Sentence 3: As the crowd diminished and I could move, I checked my purse. Sentence 4: To my disappointment, my phone and credit cards were no longer there. Choices: a. Carlos became such a good cook he became the main chef. b. From then on I have been very cautious with my belongings.
A:
a