Definition: 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: John's Success. Sentence 1: John was a very bad student. Sentence 2: He never turned in his homework. Sentence 3: His teachers thought he'd be in prison by age 20. Sentence 4: John sought to prove them wrong. Choices: a. By age 22, he was the CEO was a multi-million dollar company. b. Bob was so heated he wrote a stern letter of complaint to the airline.
Output:
a