The direct materials and direct labour standards for one bottle of Clean-All spray cleaner are given below: Direct materials Direct labour Standard Quantity or Hours 6.0 millilitres 0.3 hours Standard Price or Rate $ 0.27 per millilitre $12.00 per hour Standard Cost $1.62 $3.60 During the most recent month, the following activity was recorded: a. 21,000 millilitres of material was purchased at a cost of $0.22 per millilitre. b. All of the material was used to produce 3,000 bottles of Clean-All. c. 675 hours of direct labour time was recorded at a total labour cost of $8,100. Required: 1. Compute the direct materials price and quantity variances for the month. (Indicate the effect of each variance by selecting "F" for favourable, "U" for unfavourable, and "None" for no effect (i.e., zero variance).) Answer is complete but not entirely correct. Materials price variance $ 850 F Materials quantity variance $ 1,350 U 2. Compute the direct labour rate and efficiency variances for the month. (Indicate the effect of each variance by selecting "F" for favourable, "U" for unfavourable, and "None" for no effect (i.e., zero variance).) Labour rate variance Labour efficiency variance