If the marginal propensity to consume is 0.75, and there is no investment accelerator or crowding out, a $15 billion increase in government expenditures would shift the aggregate demand curve right by:__________.
a. $60 billion, but the effect would be larger if there were an investment accelerator.
b. $60 billion, but the effect would be smaller if there were an investment accelerator.
c. $45 billion, but the effect would be larger if there were an investment accelerator.
d.$45 billion, but the effect would be smaller if there were an investment accelerator.