A Restaurant Hires Cooks and Waiters $\quad$ $\quad$ $\quad$

A restaurant hires cooks and waiters.Cooks earn $10 an hour; waiters earn $5 an hour.The manager,who wants to maximize the number of meals served given a fixed payroll of $45 per hour,expects the following from cooks and waiters: $\quad$ $\quad$ $\quad$ $\quad$ $\quad$ $\quad$ $\quad$ $\quad$ $\quad$$\text { Total wumber of meals seived }$
$\begin{array}{c}\begin{array}{c}\text {Number of employees}\\\hline 1\\2\\3\\4\\5\end{array}\begin{array}{c}\text {Cook}\\\hline200\\380\\540\\660\\740\end{array}\begin{array}{c}\text {Waiter's}\\\hline 120\\230\\310\\360\\390\end{array}\end{array}$
Given the above information,and given the fixed payroll,the maximum number of meals that can be served is

A) 240.
B) 670.
C) 850.
D) 1,130.
E) none of the above