The Following Information Was Available About Supplies Cost for the Second

The following information was available about supplies cost for the second quarter of the year: $\begin{array}{ccc}\text { Month } & \text { Production Volume } & \text { Supplies Cost } \\\text { April } & 700 & £ 3,185 \\\text { May } & 1,600 & 7,100 \\\text { June } & 600 & 2,700\end{array}$ Using the high-low method, the estimate of supplies cost at 1,000 units of production is

A) £2,700.
B) £4,460.
C) £4,900.
D) £7,100.