Hamilton, a decorative wall clock manufacturer uses activity-based costing. Each clock consists of 20 separate parts totaling $95 in direct materials, and requires 2.5 hours of machine time to produce. Additional information is as follows: Activity Allocation Base Cost Allocation Rate Materials handling Number of parts $ 0.08 Machining Machine hours 7.20 Assembling Number of parts 0.35 Packaging Number of finished clocks 2.70 What is the cost of machining per clock? Group of answer choices $7.20. $30.00. $180.00. $18.00. $144.00