Hollow Reeds Manufacturing hired an intern to assist with some accounting duties. The intern is struggling to complete the following contribution format income statements. March 31 lune 30 Sept:30 Sales revenue $420,000 $? $840,000 Variable expenses 21 420.000 2 Contribution margin 126,000 ? 560,000 Fixed expenses 2 126.000 252.000 Operating income 2 ? Income taxes 6.300 25.200 27.000 Net Income $14,700 $58,800 $231,000 The intern has asked for your assistance. What amount should be entered for June 30 sales revenue? O $571,200 $630,000 $546,000 $579,600