The Demand for Loanable Funds Is Downsloping

The demand for loanable funds is downsloping

A) because businesses find that more investments are profitable at low interest rates than at high interest rates.
B) because households are willing to save more at high interest rates than at low interest rates.
C) only when the nominal interest rate exceeds the real interest rate.
D) because the amount of profitable business investment varies directly with the interest rate.