In order to give supporting details for the claim that there are three New Yorks. The writer has to use more than two or three sentences. So, option A is not enough to give those details and with the last option, there would be wordy paragraphs that are not necessary. The most suitable answer is B, the writer could explain his claim with one or two paragraphs.
Your purpose for writing the essay might be to persuade the reader to watch that particular TV show. (As for the questions below, I think you have to answer those yourself based on the TV show you've chosen.)
