Calculate the Average Rate of Change of the Given Function $[ 4,4.5 ]$

Multiple Choice

Calculate the average rate of change of the given function over the interval $[ 4,4.5 ]$ . $$\begin{array} { | l | l | l | l | } \hline p ( \mathbf { S } ) & 4 & 4.5 & 5 \\\hline q ( p ) \text { (items) } & 500 & 100 & 150 \\\hline\end{array}$$

A) -400
B) 1,200
C) 800
D) -800
E) -200