i don't know if I'm correct , please correct me. thank you

Het Corporation makes three products that use the current constraint, which is a particolar type of machine. Duta concerning the products appear below: TC GL. NG Selling price per unit Variable cost per unit Minutes on the constraint $ $ 494 40 5 395.20 $ 8.00 449 43 $ 320.21 $ 7.10 46968 373.92 7.60 Assume that sufficient constraint time is available to satisfy demand for all but the least protitable product. The variable cont per minute of the machine time is $2. Included in the variable costs of each product is $2 per minute of the machine time Up to how much should the company be willing to pay to acquire more of the constrained resource? 14.40 per minute $12.40 per minute $129.22 per minute $18.20 per minute