You will be given a definition of a task first, then some input 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 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: Cake. Sentence 1: Cindy was only learning how to bake. Sentence 2: But her friends thought she was really good. Sentence 3: One of them suggested baking a birthday cake for someone. Sentence 4: But she knew she wasn't good enough. Choices: a. After enough peer pressure, she ended up baking a terrible cake. b. But she never ended up having to use it.
Output:
a