The Daily Profit Made by an Automobile Manufacturer Is $P ( x ) = - 45 x ^ { 2 } + 2,250 x - 18,000$

Multiple Choice

The daily profit made by an automobile manufacturer is $P ( x ) = - 45 x ^ { 2 } + 2,250 x - 18,000$ where x is the number of cars produced per shift. How many cars must be produced per shift for the company to break even?

A) 10 or 40
B) 50
C) 25 or 30
D) None