The following cost formula for total purchasing cost in a factory was developed using monthly data.

\[\text { Purchasing cost }=\$ 56,000+(\$ 2 \times \text { Number of purchase orders })\]

Next month, 800 purchase orders are predicted. The total cost predicted for the purchasing department next month

a. is \(\$ 56,000\).

b. is \(\$ 1,600\).

c. is \(\$ 57,600\).

d. is \(\$ 800\).

e. cannot be determined from the above formula.