a.Explain the variable overhead efficiency variance. Your explanation should include more than that it was favourable or unfavourable. It should discuss a credible reason as to why.

b. Patty's Pots has used First in First out costing for the last 15 years. The controller wants to know if it is beneficial to continue using this method instead of the weighted average method. Provide the controller with your recommendation. Include appropriate calculations to back up your recommendation.