Which choice most logically completes the text?

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Over 600 languages are spoken in New York City in addition to English-one can find Aromanian spoken in the neighborhood of Ridgewood, or Hindi in Gramercy Park. Many immigrants from north China, where Mandarin is the primary language, reside in the neighborhood of Flushing (part of New York City's borough of Queens) while those who emigrated from south China, where many people speak Cantonese or Fuzhounese as a first language, tend to reside in Chinatown, in the borough of Manhattan. Among speakers of Chinese languages, those in Flushing tend to speak Mandarin as their primary language while those in Chinatown tend to speak Cantonese or Fuzhounese as their primary language. This is most likely because

Chinese immigrants who emigrated to New York City many years ago are more likely to speak several Chinese languages than are more recent Chinese immigrants.

taken together, there are more Cantonese and Fuzhounese speakers among Chinese immigrants in New York City than there are Mandarin speakers.

Chinese immigrants regularly change their residences between Queens and Manhattan after they emigrate, rather than staying in one borough.

there are geographic differences in primary language within China that are reflected in the settlement patterns of Chinese immigrants in New York City.