If Potential GDP Is Equal to $1 800 Billion, What

Multiple Choice

If potential GDP is equal to $1 800 billion, what does the long-run aggregate supply curve look like?

A) It is a horizontal line at $1 800 billion of GDP.
B) It is a vertical line at $1 800 billion of GDP.
C) It is a vertical line at a level of GDP below $1 800 billion GDP.
D) It is a vertical line at a level of GDP above $1 800 billion.