Two Draftpersons Operating the Same Computer Plotter Work $9$ Hours Each, on a Day and Night Shift Basis

Multiple Choice

Two draftpersons operating the same computer plotter work $9$ hours each, on a day and night shift basis. One produces $80$ drawings per hour; the other produces $110$ drawings per hour. What is the difference in their outputs after $25$ days?

A) 6,750
B) 18,000
C) 750
D) 42,750
E) 528