A Decrease in the Federal Funds Rate

A decrease in the federal funds rate

A) decreases the demand for loanable funds, lowers the real interest rate, and decreases aggregate demand.
B) lowers the exchange rate, increases the supply of loanable funds, and increases aggregate demand.
C) lowers other sort-term interest rate, raises the real interest rate, and increases aggregate demand.
D) increases other short-term interest rates, decreases investment, and decreases aggregate demand.