NEED ASAP!!

Working 4 hours per day, Hanna can inspect 18 computer printers. Which of the following equations could be used to represent the number of printers (N) Hanna could inspect if she worked 7 hours per day at the same rate?

A. N= 4(18)/7

B. N= (18)7/4

C. N= 7(18)

D. N= 7(4)(18)