Use the information below to answer questions $1$ and $2.$

Computers Expertise Ltd provides three services, the details for which are as follows:

The demand for all service is unlimited. The ability to provide the service is limited by the availability of qualified staff and therefore the labour time available.

Refer to the table above. Which product is the most profitable?

A$)$ Expert, because it has the highest contribution margin.

B$)$ Expert, because it has the highest sales price.

C$)$ Secretarial, because it is the most pleasurable for staff.

D$)$ Basic, because it provides the highest dollar contribution per labour hour.

Refer to the table above. The demand for Secretarial Service is very strong, however, Computer Expertise does not have sufficient labour hours available to meet the demand. An employment agency is able to supply qualified staff to provide the Secretarial Service. What is the maximum price Computer Expertise should be prepared to pay per hour?

A$)$ $$9$

B$)$ $$18$

C$)$ $$30$

D$)$ $$12$