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.

Ex Input:
Title: Bed Wetting. Sentence 1: Evan was nine but sometimes still wet the bed. Sentence 2: He was invited to a sleepover but afraid to attend. Sentence 3: He did not want anyone to discover his secret! Sentence 4: Then his mom bought him a pack of absorbent underwear to wear. Choices: a. At the end of the day, Max already loved kindergarten! b. Evan felt much more secure with the backup underwear on!

Ex Output:
b

Ex Input:
Title: Static Cling. Sentence 1: Charlotte was at work. Sentence 2: She had done laundry earlier in the day. Sentence 3: When she did the laundry, she didn't notice a sock stuck to her pants. Sentence 4: A sock fell out of her pants as she walked. Choices: a. Charlotte's co-workers laughed at her. b. Randy beats James by 20 points.

Ex Output:
a

Ex Input:
Title: Shaved Head. Sentence 1: Stan tried a new hair style. Sentence 2: It looked horrible. Sentence 3: He was too embarrassed to show anybody. Sentence 4: Stan decided to shave his head instead. Choices: a. It was black and white, so it was appropriate. b. Eventually he tried another hair style.

Ex Output:
b