Lido Company's standard and actual costs per unit for the most recent period, during which 400 units were actually produced, are given below: Materials: Standard: 1.5 metres at $1.40 per m. Actual: 2.0 metres at $1.90 per m. Direct labour: Standard: 2.0 hrs. at $5.00 per hr. Actual: 1.9 hrs. at $7.00 per Ihr. Standard $2.10 10.00 Variable overhead: Standard: 2.0 hrs. at $3.50 7.00 per hr. Actual: 1.9 hrs. at $3.00 per hr. Total unit cost $19.10 Actual $3.80 13.30 5.70 $22.80 There was no inventory of materials at the beginning or end of the period. Required: From the above information, compute the following variances. Show whether the variance is favourable (F) or unfavourable (U): a) Materials price variance b) Materials quantity variance c) Direct labour rate variance d) Direct labour efficiency variance e) Variable overhead spending variance f) Variable overhead efficiency variance