The phone bill for a corporation consists of both fixed and variable costs. Refer to the four-month data below and apply the high-low method: Minutes Total Bill
January 460 $3,000
February 200 $2,675
March 160 $2,625
April 300 $2,800
If the company uses 390 minutes in May, how much will the total bill be?
A) $2,425.
B) $2,478.
C) $2,900.
D) $3767.