A Way to Minimize the Political Difficulties Associated with Open

A way to minimize the political difficulties associated with open immigration is:

A) to restrict international investment is developing countries.
B) to increase foreign direct investment in services.
C) to design policies that allow a multinational firm to use less expensive labor in a manner that does not allow immigration.
D) to create and enforce new tariffs and quotas along with immigration laws that deter international trade.
E) None of the above