A Toy Manufacturer Is Experiencing Quality Problems on Its Assembly

Multiple Choice

A toy manufacturer is experiencing quality problems on its assembly line.Every defective toy that leaves the factory costs the firm $20.The firm has decided to hire quality inspectors to catch defective toys before they leave the factory. $\begin{array}{c}\begin{array}{c}\text {Number of}\\\text { Inspectors}\\0\\1\\2\\3\\4\\5\\6\\\end{array}\begin{array}{c}\text {Numbei of Defective}\\\text {Toys (per doy) }\\40\\24\\16\\10\\6\\2\\0\end{array}\end{array}$
Given the above information,if each inspector is paid $100 a day,how many inspectors should the firm hire to minimize the total cost of defective toys?

A) 3
B) 4
C) 5
D) 6