Lights Incorporated calculates cost for an equivalent unit of production using the weighted-average method.

Data for July:
Work-in-process inventory, July 1 (36,000 units):
Direct materials (100% completed)	$122,400
Conversion (50% completed)	76,800
Balance in work in process inventory, July 1	$199,200
Units started during July	90,000
Units completed and transferred	102,000
Work-in-process inventory, July 31:
Direct materials (100% completed)	24,000
Conversion (50% completed)
Cost incurred during July:
Direct materials	$180,000
Conversion costs	288,000

Cost per equivalent unit for materials under the weighted-average method is calculated to be:

		A) $2.00.
		B) $2.40.
		C) $3.00.
		D) $3.10.
		E) $3.20.