Sales of Granite City Products Inc. have been on a steady decline for the last 12 months. A market research study conducted revealed that the product of Granite City Products Inc. can be sold only for $480 as opposed to the current market price charged of $580 per unit. Granite City Products Inc. has decided to revise its sales price to $480. The annual sales target volume of the product after price revision is 280 units. Granite City Products Inc. wants to earn 30% on its sales amount. What is the target cost per unit? $480.00 O $145.00 $336.00 $625.00