You will be given a definition of a task first, then an example. Follow the example to solve a new instance 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: Marcus Buys Khakis. Sentence 1: Marcus needed clothing for a business casual event. Sentence 2: All of his clothes were either too formal or too casual. Sentence 3: He decided to buy a pair of khakis. Sentence 4: The pair he bought fit him perfectly. Choices: a. Marcus was happy to have the right clothes for the event. b. He left in a huff for having his ideas mocked.
Solution: b
Why? Marcus is buying clothes for a business event and not presenting an idea.

New input: Title: Dress. Sentence 1: I wanted the little blue dress. Sentence 2: I looked at the price tag. Sentence 3: It was extremely expensive. Sentence 4: I put it back on the rack and walked away. Choices: a. I returned and bought it the next day. b. I hugged her back happily.
Solution:
b