Detailed Instructions: 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: Irresponsible Credit. Sentence 1: Since College, Mary has owned credit cards. Sentence 2: She'll run up the limit but only pay the minimum payment each month. Sentence 3: And she kept getting more and more cards. Sentence 4: One day, after she turned 30, she decided she wanted to buy a house. Choices: a. She was denied a mortgage because of all her credit card debt. b. They agreed to have the sensitivity tweaked.
A:
b