The modern furniture company produces 3 types of office furniture and want to add a new product which is expected to achieve 2500 /unit as contribution margin. Is the production need 15 fees of 'zan ', 20 feet of 'arrow' and 300 working hours

If shadow price of one feet of 'zan' is $1 one feet 'arrow' is $5 and one working hours is $7.5

Options

(A)me advice this company to add this product because this product increases a contribution margin by $ 150

(B) me advice this company to add this product because this product increases a contribution margin $ 135

(c)me advice this company to don't add this product because this product decreases a contribution margin $150

(D) me advice this company to don't add this product because this product decrease a contribution margin $ 135