Which is true of Chinatown in San Francisco？A．It"s a place of Chinese restaurants and book

Which is true of Chinatown in San Francisco？

A．It"s a place of Chinese restaurants and bookstores.

B．It"s a place where all the Chinese live.

C．It"s the center of Chinese culture.

D．It"s very crowded.

请帮忙给出正确答案和分析，谢谢！