Ptarmigan Company produces two products. Product A has a contribution margin of $139.50 and requires 9 machine hours. Product B has a contribution margin of $188.40 and requires 12 machine hours. Determine the most profitable product assuming the machine hours are the constraint. If required, round your answers to two decimal places. Contribution margin per machine hour: Product A $fill in the blank 1 Product B $fill in the blank 2 Product is the most profitable.