James Manufacturing had the following information available for July Actual Results 14,000 Flexible Budget Variance Flexible Budget ? ? Sales activity Variance 4,000 Mistur Budget ? ? $ 17,800F Units Sales revenue Less: Variable manufacturing costs Variable marketing and administrative Contribution margin $ 91,500 $ 99,000 > $ 135,000 ? $ 7,50eu ? $ 8,290F $ 45,000 $ 64,000 ? ? $ 7,5080 ? What was James's activity variance for variable manufacturing costs? Multiple Choice w O $7,500