Which of the Following Best Explains Why the Social Security

Which of the following best explains why the Social Security system will face financial difficulties in the future?

A) Too much Social Security revenue was invested in the private sector rather than in government bonds.
B) In the next two decades, the number of workers paying into the system will decline sharply relative to the number of retirees collecting benefits.
C) The federal government does not pay interest on the money it borrows from the Social Security system.
D) The funds in the Social Security trust fund were invested in high-risk ventures that failed to pay off.