Why Was There Support for China's Membership in the World

Why was there support for China's membership in the World Trade Organization (WTO) ?

A) Many people thought the WTO would make China obey international trade rules because of the WTO's strong enforcement mechanisms.
B) Supporters of China's membership in the WTO had received bribes to make it worth their while.
C) China had packed the WTO with its supporters.
D) Many people thought that membership in the WTO would decrease the costs of war.
E) Many people thought that joining the WTO would increase China's costs for challenging the status quo.