Affordable Electronics Inc. manufactures medium-quality, reasonably priced wireless speakers for home use. The company uses standards to control its costs. The labour standards that have been set for one speaker are as follows: During July, 8,280 hours of direct labour time were recorded to make 27,000 units. The direct labour cost totalled $144,900 for the month. Required: 2. Break down the difference in cost from requirement 1-b above into a labour rate variance and a labour efficiency variance. (Indicate the effect of each variance by selecting "F" for favourable, "U" for unfavourable, and "None" for no effect (i.e., zero variance).) 3. The budgeted variable manufacturing overhead rate is $2.00 per direct labour-hour. During July, the company incurred $19,872 in variable manufacturing overhead cost. Compute the variable overhead spending and efficiency variances for the month. (Inclicate the effect of each variance by selecting "F" for favourable, "U" for unfavourable, and "None" for no effect (i.e., zero variance).)