At Eady Corporation, maintenance is a variable overhead cost that is based on machine-hours. The performance report for July showed that actual maintenance costs totaled $8,930 and that the associated rate varlance was $260 unfavorable. If 5,100 machine-hours were actually worked during July, the standard maintenance cost per machine- hour was: Multiple Choice $1.75 per MH O $1.80 per MH O o $1.70 per MH $1.85 per MH O At Eady Corporation, maintenance is a variable overhead cost that is based on machine-hours. The performance report for July showed that actual maintenance costs totaled $8,930 and that the associated rate varlance was $260 unfavorable. If 5,100 machine-hours were actually worked during July, the standard maintenance cost per machine- hour was: Multiple Choice $1.75 per MH O $1.80 per MH O o $1.70 per MH $1.85 per MH O