At an activity level of 8,900 machine-hours in a month, Nooner Corporation's total variable production engineering cost is $760,060 and its total fixed production engineering cost is $152,880. What would be the total production engineering cost per unit, both fixed and variable, at an activity level of 9,100 machine-hours in a month? Assume that this level of activity is within the relevant range. (Do not round intermediate calculations.)

A. $101.85

B. $101.31

C. $102.20

D. $102.38