How far did the open door policy towards china benefit the usa?

not a real estimate but i hope this info is helpful:

Explanation:

Open Door policy was rooted in the desire of U.S. businesses to trade with Chinese markets. The policy won support of all the rivals, and it also tapped the deep-seated sympathies of those who opposed imperialism, with the policy pledging to protect China's sovereignty and territorial integrity from partition.

detente translated to english means politics

the answer would be c