This question: $1$ point$($s$)$ possible

The table gives the aggregate demand schedule, the short$-$run aggregate supply schedule, and the long$-$run aggregate supply schedule for an economy.

What is the quantity of real GDP at the short$-$run macroeconomic equilibrium?

The quantity of real GDP at the short$-$run macroeconomic equilibrium is $ $$ billion.

Describe the economy's output gap.

The economy has $$

A$.$ neither a recessionary gap nor an inflationary gap

B$.$ a recessionary gap of $$550$ billion

C$.$ an inflationary gap of $$50$ billion

D$.$ a recessionary gap of $$50$ billion