Potential Real GDP = $200 Billion
Natural Rate of Unemployment = 6 Percent
Actual Rate of Unemployment = 12 Percent

Refer to the accompanying data, which is for a specific year in a hypothetical economy for which *Okun's law* is applicable. *The size of the negative GDP gap as a percentage of potential GDP for the economy is*

A. 6 percent.
B. 9 percent.
C. 12 percent.
D. 15 percent.