Answer:
D) $32.00
Step-by-step explanation:
What is the cost per driver unit for the account inquiry activity?

We will distribute the total cost of the account inquiry activity over the cost driver which is, labor hours.
Account inquiry: 86,400 cost
amount of hours 2,700
cost per driver unit: 86,400 / 2,700 = 32.00
This will be the overhead charger per hour in concept of accounting inquiry