Consider a simple macro model with government and demand-determined output. If the government wants to reduce equilibrium national income by $20 billion, G must be Select one: O a. lowered by $20 billion divided by the simple multiplier. O b. lowered by $20 billion. O c. raised by $20 billion times the simple multiplier. O d. raised by $20 billion divided by the simple multiplier. O e. lowered by $20 billion times the simple multiplier. ge