Parker Plastic, Inc., manufactures plastic mats to use with rolling office chairs. Its standard cost information for last year follows:

	Standard Quantity		Standard Price (Rate)			Standard Unit Cost
Direct materials (plastic)	8	sq ft.	$	1.02	per sq. ft.	$	8.16
Direct labor	0.3	hr.	$	11.10	per hr.		3.33
Variable manufacturing overhead (based on direct labor hours)	0.3	hr.	$	2.60	per hr.		0.78
Fixed manufacturing overhead ($383,880 914,000 units)							0.42

Parker Plastic had the following actual results for the past year:

Number of units produced and sold		1,080,000
Number of square feet of plastic used		11,600,000
Cost of plastic purchased and used	$	11,600,000
Number of labor hours worked		312,000
Direct labor cost	$	3,681,600
Variable overhead cost	$	800,000
Fixed overhead cost	$	369,000

Required: Calculate Parker Plastics variable overhead rate and efficiency variances and its over- or underapplied variable overhead. (Do not round intermediate calculations. Indicate the effect of each variance by selecting "F" for favorable, "U" for unfavorable, and "None" for no effect (i.e., zero variance).)