After Buying the Project from the Panama Canal Company, How

After buying the project from the Panama Canal Company, how did the United States gain control of the region where the Panama Canal was built?

A) The U.S. Congress sent Colombia $25 million to grant Panama its independence.
B) American troops attacked Colombia to gain access to the canal for the United States.
C) Colombia decided to grant Panama its independence in exchange for favorable trading status.
D) U.S. naval forces supported the Panamanian revolt against Colombia.