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: Dominos. Sentence 1: Domino's pizza was one of the first pizza chains I remembered. Sentence 2: As a kid I begged my parents to order pizza from them. Sentence 3: They gave in to my desire and ordered the food. Sentence 4: For twenty minutes all I could think of was my delicious meal. Choices: a. When the doorbell rang I sprang to see who was there. b. They had a big potbelly stove to keep warm.
a