In the standard loanable funds market graph, a decrease in business optimism about future economic performance would

A) shift the demand for loanable funds to the right.

B) shift the supply of loanable funds to the left.

C) cause no shift in supply or demand in the loanable funds market, but cause a decrease in the real interest rate.

D) shift the demand of loanable funds to the left.

E) shift the supply for loanable funds to the right.