Precision Inc.’s standard cost per unit, based on a budgeted level of production of 400 units, is as follows:

Raw materials (200 pounds @ 30 cents per pound)

$60.00

Direct labor (3 hours @ $15.00 per hour)

45.00

The actual results for the 380 units produced were as follows:

Raw materials cost for 76,300 pounds used

$25,942

Direct labor cost for 1,200 hours worked

16,200

Labor efficiency variance is

a. $0.

b. $900 U.

c. $300 U.

d. $900 F.