The Following Information Is Available for Electricity Costs for the Last

Multiple Choice

The following information is available for electricity costs for the last six months of the year: $$\begin{array} { c c c } \text { Month } & \text { Production Volume } & \text { Electricity Costs } \\\hline\text { February } & 1,000 & \$ 1,700 \\\text { March } & 2,200 & 4,000 \\\text { April } & 2,000 & 3,200 \\\text { May } & 1,630 & 3,100 \\\text { June } & 1,240 & 2,600 \\\text { July } & 1,340 & 3,020\end{array}$$
Using the high-low method, what is the estimated variable cost per unit of production? (Round your answer to two decimal places.)

A) 1.75
B) 1.92
C) 1.53
D) 1.37