As a sanctions regime in the United States, what is one of the purposes of the Office of Foreign Assets Control (OFAC)?
选项：

A: It fulfills Common Foreign and Security Policy objectives.
B: It enforces the Foreign Corrupt Practices Act (FCPA)
C: It tests UN Security Council resolutions.
D: It enacts and regulates sanctions to mitigate threats to national security, foreign policy, and the US economy.