Two firms, A and B, both produce widgets. The price of widgets is $1 each. Firm A has total fixed costs of $500,000 and variable costs of 50 per widget. Firm B has total fixed costs of $240,000 and variable costs of 75 per widget. The corporate tax rate is 40%. If the economy is strong, each firm will sell 1,200,000 widgets. If the economy enters a recession, each firm will sell 1,100,000 widgets. Calculate firm B's degree of operating leverage.

	A.	9.09
	B.	-7.86
	C.	7.14
	D.	.714