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.
Input: Title: Super Shopper. Sentence 1: Helen was at the store picking up groceries. Sentence 2: Over the intercom the store announced a fabulous deal. Sentence 3: Helen couldn't believe her luck. Sentence 4: The store was offering a buy two get three free deal on steak. Choices: a. Helen waited in the checkout line victoriously with her free steaks. b. But then his phone shut off as he was about to finish.
Output:
a