The Quantity of Loanable Funds Supplied Increases If the ________,All

The quantity of loanable funds supplied increases if the ________,all other things remaining the same,because the ________.

A) real interest rate rises;cost of living is determined by the real interest rate
B) real interest rate rises;real interest rate is the opportunity cost of consumption
C) real interest rate rises;real interest rate is the opportunity cost of saving
D) real interest rate falls;real interest rate is the opportunity cost of saving
E) real interest rate falls;real interest rate is the opportunity cost of consumption