Suppose that an economy is in equilibrium at a real GDP of $10 trillion at a price level of 100. Theshort-run aggregate supply curve isupward-sloping and there is an increase in autonomous expenditures of $0.30 trillion. This increase in expenditures enabled the real GDP to increase to $10.50 trillion. The change in the price level has changed the multiplier to

A.

5.722.

B.

9.70.

C.

8.58.

D.

1.667.