Answer:
Option B and C
Step-by-step explanation:
The reason is that the variance analysis is a control procedure and it helps managers to control things that can be controlled. The managers are not liable for the things that are not controllable. Variance analysis conducted every week or month, provides information to managers which helps them to take corrective action for example, if material variance is because of price increases then the manager must search for other suppliers providing at a lower cost.
Furthermore, the favourable variances is not good always because it might had adverse variance in the other part part of the cost element. For example the material variance was positive because we used raw material of down quality so we saved $5000. The sales droped and we lost contribution of $10000 due to using down quality material. So its evident that favourable variances are not always good.