Which of the following is NOT mentioned as America

单项选择题

Which of the following is NOT mentioned as America’s approaches to the problem().

A. Sending soldiers to the border to solve the kidnapping problems.
B. Sending law-enforcement officials to the border to prevent drugs entering the United States.
C. Stopping the flow of money from the U. S. to Mexico.
D. Cutting off the flow of weapons from the U. S. to Mexico.