Which of the Following Describes Korea's Relationship with China

Which of the following describes Korea's relationship with China?

A) Korea was incorporated into the Chinese empire for over a thousand years.
B) Korean male elites developed their own alphabet as a way to resist Chinese cultural influence.
C) Korea's capital city of Kumsong was modeled directly on the Chinese capital of Chang'an.
D) Korea was able to avoid participating in China's tribute system.