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 does not connect with the rest of the story, indicating your choice as 'a' or 'b'. If both sentences are plausible, pick the one that makes less sense.

[Q]: Title: Stocks. Sentence 1: I bought shares that I thought were a good deal. Sentence 2: I kept them for a few days until I could make a profit. Sentence 3: The time came that I was ready to sell the shares. Sentence 4: Just as I went in to click the sell button the price plummeted. Choices: a. Because of this I lost all of my money. b. So I used his answers to make a good grade after my mind went blank.
[A]: b

[Q]: Title: Leaving Germany. Sentence 1: My friend Sam went to Germany last month. Sentence 2: He returned this Sunday. Sentence 3: He got upgraded to first class and was happy. Sentence 4: However, he was mad because the flight was delayed for 2 hours. Choices: a. Fatima was regretting her decision. b. It took him 9 hours to get back to Boston.
[A]: a

[Q]: Title: Pulling pranks. Sentence 1: Irene liked to pull pranks on her brother. Sentence 2: But because she was so clever, she was never caught. Sentence 3: Her brother, who wanted revenge, pulled a prank on her. Sentence 4: He didn't get caught and Irene was caught instead. Choices: a. So Irene proposed a truce and her brother agreed. b. But Hester misses the roses because they were an old tradition.
[A]:
b