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 seamlessly connects with the rest of the story, indicating your choice as 'a' or 'b'. If both sentences are plausible, pick the one that makes more sense.

Title: New heels. Sentence 1: Sally wanted new heels. Sentence 2: She knew they were not in her budget. Sentence 3: She decided to buy them anyway. Sentence 4: She regretted her decision. Choices: a. Stunned and heartbroken, Kendra didn't know what to do. b. She had to save the rest of the month.
b

Title: Armpit. Sentence 1: Dan was having a hard time keeping his pen out of his mouth. Sentence 2: He had a habit of chewing on the cap as he worked. Sentence 3: Dan's dentist told him he needed to stop this habit. Sentence 4: He rubbed his pen in his armpits to make it too nasty to chew on. Choices: a. Dan was dismayed when it didn't help. b. Tim and Jerry's parents activated the parental controls on their TV.
a

Title: In-laws. Sentence 1: Tom's wife's sister lived with him. Sentence 2: She didn't pick up after herself. Sentence 3: She didn't pay any rent. Sentence 4: Tom's wanted to kick her out. Choices: a. His wife wouldn't let him. b. She apologized, shamefaced.
a