In a Small Asian Country, It Is Estimated That Changing

Multiple Choice

In a small Asian country, it is estimated that changing the level of capital from $8 million to $12 million will increase real GDP from $5 million to $6 million. If the number of hours worked in the labour force does not change, what does this information tell you about the slope of the per-worker production function in this range?

A) The slope is -4.
B) The slope is 1/4.
C) The slope is 2.
D) The slope is 4.
E) The slope is 8.