Average Maintenance Costs Are $1

Multiple Choice

Average maintenance costs are $1.50 per machine-hour at an activity level of 8,000 machine-hours and $1.20 per machine-hour at an activity level of 13,000 machine-hours.Assuming that this activity is within the relevant range,total expected maintenance cost for a budgeted activity level of 10,000 machine-hours would be closest to?

A) $11,433.
B) $13,440.
C) $15,000.
D) $16,128.