4. Reynoso Corporation manufactures titanium and aluminum tennis racquets. Reynosos total overhead costs consist of assembly costs and inspection costs. The following information is available:

Cost	Titanium	Aluminum	Total Cost
Assembly	500 mach. hours	500 mach. hours	$44000
Inspections	350	150	$84000
	2100 labor hours	1900 labor hours

Reynoso is considering switching from one overhead rate based on labor hours to activity-based costing. Total overhead costs assigned to titanium racquets, using a single overhead rate, are

$67200.

$84000.

$89600.

$64000.