Did economic output start growing faster than population from the beginning of the human inhabitation of the earth?

If the Fed were to reduce the legal reserve ratio, we would expect:

A. lower interest rates, an expanded GDP, and a higher rate of inflation. B. lower interest rates, an expanded GDP, and a lower rate of inflation. C. higher interest rates, a contracted GDP, and a higher rate of inflation. D. higher interest rates, a contracted GDP, and a lower rate of inflation.

Refer to the diagrams. At the profit-maximizing level of employment for this firm, the amount available to pay to nonlabor resources:

A.  is 0abc.
B.  is 0Wbc.
C.  is Wab.
D.  cannot be determined.