Detailed Instructions: 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.
Q: Title: Robert's Sandwich. Sentence 1: Robert decided to make a sandwich. Sentence 2: He got the bread and bologna and cheese. Sentence 3: He started to make the sandwich but forgot the mayo, so he got that. Sentence 4: He put the bologna and cheese and mayo between two pieces of bread. Choices: a. Robert ate his sandwich. b. Allie was so scared that she ran away.
A:
a