Buying on "Margin" Meant That

Buying on "margin" meant that

A) stocks could be purchased by paying a percent of the price and borrowing the rest.
B) consumer products could be purchased and paid for on the installment plan.
C) European nations could borrow needed capital from U.S. banks so that their citizens could buy U.S. products.
D) the government could use deficit spending to solve the problems of the depression.
E) farmers could use government loans to finance enterprises.