Answer:
D) $193,440.
Explanation:
total number of calls: 10,000
total cost = $312,000
cost per call = $312,000 / 10,000 calls = $31.20
cost of calls associated to the wholesale operation = 3,800 calls x $31.20 = $118,560
cost of calls associated to the retail division = (total number of calls - calls associated to wholesale operations) x cost per call = (10,000 calls - 3,800 calls) x $31.20 = 6,200 x $31.20 = $193,440