The supply and demand curves for loanable funds are affected by different factors. Classify each event according to which curve shifts, if any, and the direction of the shift.
a. an increase in tax breaks
b. a decrease in the productivity of capital
c. an increase in the real interest rate
d. an increase in investor confidence
e. an increase in life expectancy
f. a decrease in the government budget surplus

1. increase in the demand for loanable funds
2. increase in the demand for loanable funds
3. neither curve shifts
4. increase in the demand for loanable funds
5. increase in the supply of loanable funds
6. increase in the demand for loanable funds