urgent pls

Ringing Solutions produces 12,000 units of a cell phone. The production requires prime costs of $400,000, uses 2,500 machine hours, and takes 1,800 setup hours. The activity rates are $50 per machine hour and $130 per setup hour. What is the unit cost of a cell phone? (Note: Round answer to two decimal places.) O d. $100.65 e. $30.55 a. $60.15 O b. $40.35 c. $63.25