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: Bus trip. Sentence 1: Jason wanted to visit Dallas. Sentence 2: He had friends who lived there and invited him to visit. Sentence 3: Jason researched flights but they were too expensive. Sentence 4: Jason decided to go to Dallas by bus. Choices: a. He felt confident the trip would still be fun. b. It had been a really fun night together.
a

Title: Purse left behind. Sentence 1: Mary took her purse into the bathroom stall and set it on the shelf. Sentence 2: Without thinking, she exited the bathroom without her purse. Sentence 3: Later she realized she didn't have her purse. Sentence 4: She ran to the bathroom and found her purse. Choices: a. Unfortunately, her wallet had been emptied and she was sad. b. James passed the written part which made him happy.
a

Title: Fiona's Flowers. Sentence 1: Fiona worked at a flower shop in a small town. Sentence 2: At around noon a customer entered and asked for a large rose bouquet. Sentence 3: Fiona toiled away and picked out the best roses she could find. Sentence 4: She presented the bouquet to the man. Choices: a. So he got a divorce from his wife. b. The man loved the bouquet, and paid twice its cost to Fiona.
b