Product A requires 6 machine hours per unit to be produced, Product B requires only 3 machine hours per unit, and the company's productive capacity is limited to 200,000 machine hours. Product A sells for $20 per unit and has variable costs of $10 per unit. Product B sells for $6 per unit and has variable costs of $1 per unit. Fixed costs are $200,000 regardless of which product is produced. Which of the following variables is not relevant to the decision of product mix?

Product A requires 6 machine hours per unit to be produced, Product B requires only 3 machine hours per unit, and the company's productive capacity is limited to 200,000 machine hours. Product A sells for $20 per unit and has variable costs of $10 per unit. Product B sells for $6 per unit and has variable costs of $1 per unit. Fixed costs are $200,000 regardless of which product is produced. Which of the following variables is not relevant to the decision of product mix?

Selling price of product A

Contribution margin for product B

Machine hours to produce product A

Fixed costs

Machine hours available