Any help is appreciated

Emerold Ltd has accumulated the following data for the most recent 6-month period. Direct labour hours Maintenance services 30,000 $45,000 19,000 30,000 September 21,000 40,000 6,000 15,000 November 12,000 20,000 December 9,000 20,000 Management believes that maintenance cost is a mixed cost that depends on direct labour hours. Using the high-low method to estimate the variable component of this cost, the estimate would be closest to: Select one: 0 A. $1.93 per direct labour hour 0 B. $0.48 per direct labour hour 0 C. $0.47 per direct labour hour 0 D. $1.25 per direct labour hour