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: Monkeys Aren't Mean. Sentence 1: Tommy's school zoo trip took a bad turn. Sentence 2: The monkey in its enclosure was glaring angrily at him. Sentence 3: Tommy was unsure if he'd done something upsetting. Sentence 4: Tommy realized the monkey was glaring at an animal nearby. Choices: a. It leaped on the deer and fed, at last satisfying its hunger. b. Tommy and the monkey were back on good terms!
Output:
b