Leas Corporation Staffs a Helpline to Answer Questions from Customers

Multiple Choice

Leas Corporation staffs a helpline to answer questions from customers. The costs of operating the helpline are variable with respect to the number of calls in a month. At a volume of 25,000 calls in a month, the costs of operating the helpline total $452,500.To the nearest whole cent, what should be the average cost of operating the helpline per call at a volume of 25,300 calls in a month? (Assume that this call volume is within the relevant range.)

A) $18.93
B) $18.00
C) $17.89
D) $18.10