Cathy Company has a 40% contribution margin ratio. Cathy wants to give its sales staff a $60,000 increase in salary, but still wants to maintain its current $1,000,000 net operating income. Assuming no other change in costs, by how much would sales revenue have to increase for Cathy to cover the $60,000 increase in salaries and still maintain its current $1,000,000 net operating income? $100,000 O $60,000 $200,000 O $250,000 O $150,000