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

Helpline

A service providing information and support to people in need, typically available via telephone or the internet.

Volume

Refers to the quantity of an item produced or sold over a specific period of time.

Calls

A financial instrument giving the holder the right, but not the obligation, to buy an asset at a specified price within a specific period.