A Restaurant Hires Cooks and Waiters

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: Given the above information,the manager should hire

A) 2 cooks and 4 waiters.
B) 2 cooks and 5 waiters.
C) 3 cooks and 2 waiters.
D) 3 cooks and 4 waiters.
E) none of the above