What is a difference between fiat and commodity money? choose one:

a. fiat money allows an economy to easily expand the money supply, whereas it is more difficult to expand the supply of commodity money.
b. fiat money has a higher intrinsic value than commodity money.
c. fiat money resolves the double coincidence of wants, whereas commodity money does not.
d. tying an economy’s money to a commodity has no dangers, whereas the use of fiat money is very dangerous.
e. inflation occurs only in an economy that relies on commodity money.