Populations Tend to Grow Over Time,meaning There Are More Workers

Populations tend to grow over time,meaning there are more workers.In order to maintain a constant level of worker productivity,the total amount of capital available to them must

A) increase at a rate less than the rate of population growth.
B) stay constant over time,as inflation and population growth tend to cancel each other out.
C) increase at a rate equal to the rate of inflation.
D) increase at a rate at least equal to population growth.
E) decrease slightly,as this will motivate employees to work harder.