Factor Co. can produce a unit of product for the following costs: Direct material Direct labor Overhead Total product cost per unit $ 7.40 23.40 37.00 $67.80 An outside supplier offers to provide Factor with all the units it needs at $39.90 per unit. If Factor buys from the supplier, the company will still incur 70% of its overhead. Factor should choose to: Multiple Choice Make since the relevant cost to make it is $41.90. ( Make since the relevant cost to make it is $30.80. Buy since the relevant cost to make it is $56.70. Buy since the relevant cost to make it is $30.80