【单选题】To produce 19 litres of Product X, a standard input mix of 8 litres of chemical A and 12 litres of chemical B is required. Chemical A has a standard cost of $20 per litre and chemical B has a standard...
A.
Both variances were adverse
B.
Both variances were favourable
C.
The total mix variance was adverse and the total yield variance was favourable
D.
The total mix variance was favourable and the total yield variance was adverse