If the Slope of the Per-Worker Production Function Is 1/4

Multiple Choice

If the slope of the per-worker production function is 1/4 in a given range, how will a $10,000 increase in capital per hour worked affect real GDP per hour worked in the same given range?

A) Real GDP per hour worked will increase by $2,500.
B) Real GDP per hour worked will increase by $40,000.
C) Real GDP per hour worked will increase by $10,000.
D) Real GDP per hour worked will decrease by $40.000.
E) Real GDP per hour worked will decrease by $10,000.