Assume that an economy's real GDP multiplier is 2 and that this economy is in equilibrium at $500 billion. If the government wants to move this economy to full-employment at $600 billion, while maintaining a balanced budget, it must choose which of the following options?a. Increase government spending and taxes by $100 billionb. Decrease government spending and taxes by $100 billionc. Increase government spending and taxes by $200 billiond. Decrease government spending and taxes by $200 billion