As a Company Adds the First Four Workers to Its

Multiple Choice

As a company adds the first four workers to its production process in the short run, its output rises from 0 to 12 to 25 to 35 to 43. Addition of the fifth worker will most likely lead to an output rate

A) greater than 51.
B) equal to 51.
C) less than 51.
D) greater than 51 if the firm experiences diseconomies of scale.
E) none of the above.