Dvorak Company produced 1,000 units of product that required three standard hours per unit. The standard variable overhead cost per unit is $1.40 per hour. The actual variable factory overhead was $4,000. Determine the variable factory overhead controllable variance. Enter a favorable variance as a negative number using a minus sign and an unfavorable variance as a positive number.

Already tried 400,-400,12600 but these answers are all wrong.