Mazoon Company has fixed costs of $12,000 and a breakeven point of 600 units. If the company plans to produce 900 units, and sales increase by 10%, its operating income will increase by: a 30% b. None of the given answers C 60% d. 10% e 20% Mazoon Company has fixed costs of $12,000 and a breakeven point of 600 units. If the company plans to produce 900 units, and sales increase by 10%, its operating income will increase by: a 30% b. None of the given answers C 60% d. 10% e 20%