Silvio Enterprises Produces Three Products,with Costs and Selling Prices as Follows

Silvio Enterprises produces three products,with costs and selling prices as follows:
Each product requires a certain number of minutes on the drill press.There is only one drill press available so it is the constraint for this product.Model D7 requires 2 minutes of drill press time,Model B3 requires 1 minute of drill press time,and Model F5 requires 7 minutes of drill press time.In what order should Silvio Enterprises emphasize its products to maximize its contribution margin? (Rank the products in order from most profitable to least profitable. )

A) Model B3,Model D7,Model F5
B) Model B3,Model F5,Model D7
C) Model D7,Model B3,Model F5
D) Model F5,Model D7,Model B3