Company purchased equipment having an invoice price of $17,500. The terms of sale were 4/10, n/30, and Harvard paid within the discount period. In addition, Harvard paid a $140 delivery charge, $210 installation charge, and $941 sales tax. The amount recorded as the cost of this equipment is:

A.) $18,091.

B.) $17,850.

C.) $17,150.

D.) $18,791.