The Following Four Months of Data Were Collected on Utility

Multiple Choice

The following four months of data were collected on utility cost and the number of labour hours in Edmonton Company's factory.
$\begin{array}{lrr}& \text { Utility } & \text { Labour } \\\text { Month } & \text { cost } & \text { hours }\\\text { May } & \$ 22,100 & 3,975 \\\text { June } & 24,600 & 5,430 \\\text { July } & 23,500 & 4,400 \\\text { August } & 20,140 & 3,200\end{array}$
-Refer to the Figure.What would be the estimate of electricity cost if the factory incurred 4,700 labour hours next month?

A) $9,400
B) $19,560
C) $20,260
D) $23,140