You will be given a definition of a task first, then some input of the task.
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: Beep. Sentence 1: Abe's UPS had a red led flashing he needed to replace the battery. Sentence 2: He hooked up a serial cable to his laptop to see the actual diagnosis. Sentence 3: The UPS showed the battery as being fully charged. Sentence 4: Abe got sick of messing with the malfunctioning device. Choices: a. He listed it on his local Freecycle for whomever wanted it. b. His parents hired a tutor for Aaron to raise his grades.
Output:
a