Summerlce Pty Ltd is a manufacturer of a range of ice cream products. The following is a list of activities, costs and quantities of activity drivers for a number of activities that occur in the factory. Activity Activity Quantity of Activity Cost Driver Activity Driver Measure $7 000 # 500 ingredients batches batches Load $9 200 # 500 machines batches batches Supervise $36 # 4500 mixing 000 machine MH hours Pack into $24 # litres 600 000 containers 000 litres Load into $10 500 # 350 000 freezers cartons cartons Under an activity-based costing system, what is the activity cost per unit of activity driver for measuring ingredients? Select one: O a. $12.90 O b. $15.00 c. $13.80 O d. $14.00