Bell Company Has Provided the Following Data for Maintenance Costs

Multiple Choice

Bell Company has provided the following data for maintenance costs: $$\begin{array} { | l | l | l | } \hline & \text { April } & \text { May } \\\hline \text { Machine hours incurred } & 12,000 & 16,000 \\\hline \text { Maintenance cost incurred } & \$ 24,000 & \$ 26,000 \\\hline\end{array}$$ Using the high-low method, the cost formula for maintenance cost is?

A) $1.625 per machine hour.
B) $24,000 plus $0.50 per machine hour.
C) $2.00 per machine hour.
D) $18,000 plus $0.50 per machine hour.