IV 15 Points Michelle's Flowering Plants provides the following information for the month of May: Actual Budget Tulips Geraniums Tulips Geraniums Sales in units 3,900 3,600 4,500 3,000 Contribution margin per unit $11 $18 $10 $20 A. What is the budgeted contribution margin per composite unit for the actual mix? B. What is the budgeted contribution margin per composite unit for the budgeted mix? C. For May, will the sales-mix variance be favorable or unfavorable? Explain your answer.