If the Entire National Debt Were Paid Off at One

If the entire national debt were paid off at one time:

A) the effect on the economy would be expansionary.
B) the effect on the economy would be contractionary.
C) there would be no effect on the economy because the paid-off debt holders would spend their money on new goods and services.
D) there would be a flow of funds into the United States as foreign governments tried to borrow from the recently paid off debt holders.