Stacy, Inc., produces a product using a process that allows for substitution between two materials, Alpha and Beta. The company h the following direct materials data for its product. Standard costs for one unit of output Alpha 42 units of input at Beta 84 units of input at $6.00 $8.50 The company had the following results in June. Units of output produced 2,100 units Materials purchased and used Alpha 95,700 units at $5.50 Beta 168,900 units at $9.00 Required: a. Compute materials price and efficiency variances. b. Compute materials mix and yield variances. Complete this question by entering your answers in the tabs below. Required A Required B Compute materials price and efficiency variances. (Do not round intermediate calculations. Indicate the effect of each variance by selecting "F" for favorable, or "U" for unfavorable. If there is no effect, do not select either option.) Alpha Beta Total Materials price variance Materials efficiency variance Required A Required B > Required A Required B Compute materials mix and yield variances. (Do not round intermediate calculations. Indicate the effect of each variance by selecting "F" for favorable, or "U" for unfavorable. If there is no effect, do not select either option.) Alpha Beta Total Materials mix variance Materials yield variance