In the Production Function $Y = F ( K , L ) = \bar { A } \bar { K } ^ { 1 / 3 } L ^ { 2 / 3 }$

Multiple Choice

In the production function $Y = F ( K , L ) = \bar { A } \bar { K } ^ { 1 / 3 } L ^ { 2 / 3 }$ , $\bar { A }$
Represents:

A) an unknown
B) the amount of capital in an economy
C) the amount of labor in an economy
D) a productivity parameter
E) an error term