9 Martin Enterprises has a predicted operating income of $140,000. Its total variable expenses are $50,000 and its total fixed expenses have doubled from $20,000 to $40,000. The unit contribution margin for the company's sole product Is $10. The number of units that Martin Enterprises needs to sell to achieve the predicted operating Income would be 03:10:30 Multiple Choice 10.000 13,000 23,000 18.000