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.
because the article is talking about how this event changed their lives whether Harding did do it or not she was banned and Kerrigan had to suffer that leg injury and not be able to play in the Olympics after someone attacked her.