The Demand for Dollars Is Much Stronger Than Any Other

Multiple Choice

The demand for dollars is much stronger than any other currency because:

A) the dollar is the common transaction currency involving both US.imports and US.exports.
B) supply of the US.dollar is significantly higher than other currencies.
C) the price of the dollar is much lower compared to the currencies of other countries.
D) the US dollar is nonconvertible in other countries.