If the production function is Y = AK^(2/3)L^(1/3) in the land of Antegria, and the labor force increases by 5 percent while capital is constant, labor productivity, measured by Y / L, will:
A) increase by 3.33 percent.
B) increase by 1.67 percent.
C) decrease by 1.67 percent.
D) decrease by 3.33 percent.