Question Required information (Appendix 10A) Saskatoon Company uses two raw materials, A and B, in the manufacture of its only product: Zizbo. The materials are very close substitutes. The standard proportions for the manufacture of a unit of Zizbo are 2 units of A and 3 units of B. The unit standard prices of A and B are $10 and $8, respectively. During the month of August, the company used 450 units of A and 750 units of B to produce 230 units of Zizbo. a) For raw material A, what were the mix and yield variances, respectively? b) For raw material B, what were the mix and yield variances, respectively? c) What were the direct materials quantity variances for raw materials A and B, respectively