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: Birthday Cake. Sentence 1: I accidentally burned my friend's birthday cake. Sentence 2: The party was today, and I didn't have time to cook another. Sentence 3: Panicking, I ran to the store and bought a cake. Sentence 4: When I got to the party, I told her I had made it. Choices: a. Everyone was impressed, and they never found out I bought it. b. Jake provided a grand speech.
a