Hang Ten Company manufactures surf boards and uses an activity-based costing system to allocate all manufacturing conversion costs. Each surf board consists of 30 separate parts totaling $155 in direct materials, and requires 2 hours of machine time to produce. The company incurs no direct labor costs. Additional information follows: Activity Materials handing Machining Assembling Packaging Allocation Base Number of parts Machine hours Number of parts Number of finished units Cost Allocation Rate $4.75 per part $5.00 per machine hour $3.50 per part $6.75 per finished unit What is the total manufacturing cost per surf board? OA $40625 OB. $552.50 OC. $419.25 OD. $150.00