According to Keynesians, a small increase in autonomous expenditures most likely causes a large increase in aggregate equilibrium income and output in the economy because:
| A. | businesses emulate the spending decisions of their competitors. | 
| B. | as the level of savings increases, a greater pool of loanable funds is available for investment spending by business. | 
| C. | increases in income cause tax revenues to increase, thereby stimulating increases in government spending. | 
| D. | increases in income cause a succession of spending rounds by both businesses and households. |