Supply Costs at Rupard Corporation's Chain of Gyms Are Listed

Supply costs at Rupard Corporation's chain of gyms are listed below:
Management believes that supply cost is a mixed cost that depends on client-visits. Using the high-low method to estimate the variable and fixed components of this cost, those estimates would be closest to:

A) $0.76 per client-visit; $18,152 per month
B) $1.31 per client-visit; $10,462 per month
C) $2.08 per client-visit; $28,489 per month
D) $0.77 per client-visit; $17,952 per month