One Reason Zimbabwe Suffered from Hyperinflation Is That the Government

One reason Zimbabwe suffered from hyperinflation is that the government had decided to pay for all of its expenses by

A) selling Treasury bonds to foreign governments.
B) selling its government-run oil company to a private company,which then defaulted on its payment.
C) raising interest rates to attract foreign direct investment,then nationalizing the foreign-owned facilities.
D) printing more and more money.