The following monthly budget data for Chang International Ltd. Is presented below. Operating income for the month is $260,000. Product C Product J Product R Sales $ 660,000 $ 380,000 $ 660,000 Variable Cost 396,000 $ 266,000 $ 528,000 What would happen to Chang International's operating income if their sales climbed 80%? Operating income would not change. Operating income would also increase by 80%. Operating income would increase by approximately 16% Operating income would increase by approximately 157%