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.
Q: Title: Jackson's Mother. Sentence 1: Jackson's mother was old and ill. Sentence 2: The more time went on, the more ill she became. Sentence 3: One day Jackson got a call that his mother was near death. Sentence 4: Jackson drove to the hospice where she was living. Choices: a. He arrived just in time to say goodbye to his mother one last time. b. Ever since, she looks for the rainbow after the storm.
A:
a