The Manager of the Customer Service Department at a Bank

The manager of the customer service department at a bank can hire employees with a high school degree (HS) who earn $10,000 annually or employees with a bachelor's degree (B) who earn $20,000. The manager wants to maximize the number of customers served given a fixed payroll.

$\begin{array}{lll}& \text {Number of Adaitional Customers Served }\\ \text { Worker}& \text {High School Degree }& \text {Bachelor's Degree }\\1 s t & 80 & 90 \\2nd & 60 & 80 \\3 r d & 50 & 60 \\4 t h & 40 & 40 \\5 t h & 35 & 35 \\6 \text { th } & 30 & 25\end{array}$
-If the manager has a payroll of $80,000, how should the budget be allocated in order to maximize the number of customers served?

A) Hire two HS and three B.
B) Hire four HS and two B.
C) Hire one HS and two B.
D) Hire three HS and one B.
E) none of the above