Use the following data to find the direct labor efficiency variance.

Direct labor standard (4.0 hrs.@ $ 7/hr.)	$28per finished unit
Actual hours worked per unit	3.5 hrs
Actual units produced	4,500 units
Actual rate per hour	$7.25

Group of answer choices

$3,938 unfavorable

$18,000 unfavorable

$18,000 favorable

$15,750 favorable

$3,938 favorable