Crystal Clear Water Hauling Wants to Determine a Fuel Surcharge

Crystal Clear Water Hauling wants to determine a fuel surcharge to add to its customers' bills based on the number of miles driven to each area.It wants to separate the fixed and variable portion of the truck's operating costs so it has a better idea of how distance affects these costs.Crystal Clear Water Hauling has the following data available. $$\begin{array} { | l | c | c | } \hline \text { Month } & \text { Miles driven } & \text { Total operating costs } \\\hline \text { January } & 15,900 & \$ 27,500 \\\hline \text { February } & 17,300 & \$ 29,910 \\\hline \text { March } & 18,500 & \$ 29,830 \\\hline \text { April } & 16,100 & \$ 28,600 \\\hline \text { May } & 17,100 & \$ 28,800 \\\hline \text { June } & 15,500 & \$ 26,830 \\\hline\end{array}$$
- The variable cost per mile using the high-low method is:

A) $1.73.
B) $1.61.
C) $1.00.
D) $0.97.