It Took 100 Hours to Produce the First Unit and 95

Multiple Choice

It took 100 hours to produce the first unit and 95 hours to produce the second unit. How many hours are required to produce the eighth unit? [Note: a calculator is required to answer this question.]

A) fewer than or equal to 60 hours
B) greater than 60 hours but fewer than or equal to 75 hours
C) greater than 75 hours but fewer than or equal to 90 hours
D) greater than 90 hours