Which of the Following Is True in Regards to Okun's

Multiple Choice

Which of the following is true in regards to Okun's law?

A) employment does not increase commensurately with output rises because firms tend to hoard labor
B) when demand increases,firms tend to work their employees harder and longer
C) it is Okun's prediction of the negative relationship between the output and unemployment gaps that allows the modern Phillips curve to be translated into the AS curve
D) all of the above
E) none of the above