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: Edema. Sentence 1: While I'm working, my feet and ankles swell. Sentence 2: I started getting edema a few months ago. Sentence 3: My kidney malfunctioned and I started gaining fluid. Sentence 4: I took a diuretic in hopes of reducing the swelling. Choices: a. Jill's bird starved to death. b. It doesn't seem to be helping today.
Output:
b