which of the following is the best example of the paradox of thrift?

1. an exogenous increase in private saving leads to fall in the real interest rate
2. an increase in autonomous saving leads to a fall in equilibrium output
3. an increase in the marginal propensity to consume leads to a fall in equilibrium output
4. a fall in public savings leads to rise in the real interest rate
5. an increase in autonomous consumption leads to a rise in equilibrium output