Along the per-worker production function, what happens to real GDP per hour worked as capital per hour worked increases
A. Real GDP per hour worked increases at an increasing rate.
B. Real GDP per hour worked decreases at a decreasing rate.
C. Real GDP per hour worked decreases at an increasing rate.
D. Real GDP per hour worked increases at a decreasing rate.
Answer: D. Real GDP per hour worked increases at a decreasing rate.