Which of the Following Is the Appropriate Procedure to Apply

Which of the following is the appropriate procedure to apply overhead to production using normal costing?

A) Assign actual direct material and direct labor costs plus an amount representing "normal" manufacturing overhead to products.
B) Assign "normal" direct material and direct labor costs plus an amount representing "normal" manufacturing overhead to products.
C) Assign actual direct material and direct labor costs plus an amount representing actual manufacturing overhead to products.
D) All of the answers are correct.