Johnson Company operates two plants: Plant X and Plant Y Johnson Company reported for the year just ended a contribution margin of $56.000 for Plant X Plant Y had sales of $200,000 and a contribution margin ratio of 30%. Net operating income for the company was $26,000 and traceable fixed costs for the two plants totalled $50,000. What were Johnson Company's common fixed costs for last year? Multiple Choice $40,000 $50,000 O $70,000 500.000