Answer:
All of the answers are correct.
Step-by-step explanation:
At the beginning of the accounting period a pre-determined overhead is computed by dividing the estimated overhead production by the estimated basis of operations. The default overhead rate is then applied to manufacturing, so that the standard cost for a product may be calculated
The purpose of using pretermined overhead rates are
Delays in product costing can be avoided
Variation in cost assignment due to seasonality can be prevented
Variation in cost assignment due to short-term variations in volume can be prevented
The Use of predetermined overhead rates serves all the above purposes
Hence, all answers are correct.