Which of the following formulas is incorrect?

Question 9 options:

	DM Quantity Variance = Standard Price X (DM Used (Actual Output X Standard DM Input Ratio))
	DL Efficiency Variance = Standard Rate X (Hours Logged Hours Allowed)
	DL Rate Variance = Hours Logged X (Actual Rate Standard Rate)
	DM Price Variance = Quantity of DM Purchased X (Actual Price Standard Price)
	All the formulas above are correct.