3. Lido Company's standard and actual costs per unit for the most recent period, during which 400 units were actually produced, are given below: Standard Actual Materials: Standard: 2 foot at $1.50 per foot $ 3.00 Actual: 2.1 foot at $1.60 per foot... $3.36 Direct labor: Standard: 1.5 hours at $6.00 per hour 9.00 Actual: 1.4 hours at $6.50 per hour... 9.10 Variable overhead: Standard: 1.5 hours at $3.40 per hour 5.10 Actual: 1.4 hours at $3.10 per hour... Total unit cost...... S1710 $16.80 Required: (15%) From the foregoing information, compute the following variances. Show whether the variance is favorable (F) or unfavorable (U): a. Materials price variance. b. Materials quantity variance. c. Direct labor rate variance. d. Direct labor efficiency variance. e. Variable overhead rate variance. f. Variable overhead efficiency variance