Suppose that because of a sudden increase in life expectancy, a lot of people decide to save more for what they expect to be a longer retirement. This will:____.1. shift the demand for loanable funds to the right causing the interest rate to rise. b. shift the demand for loanable funds to the left causing the interest rate to fall. c. shift the supply of loanable funds to the left causing the interest rate to rise. d. shift the supply of loanable funds to the right causing the interest rate to fall.