Given the task definition and input, reply with output. 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: Wendy the Writer. Sentence 1: Wendy was a short story writer. Sentence 2: She wrote a story about a scary monster that terrified a local town. Sentence 3: The only way to destroy the monster was to sing in unison. Sentence 4: The whole town sang in unison to destroy the monster. Choices: a. This was Wendy's best story and was awarded a nobel prize. b. Charles feels good that he completed his degree.
a