4 pts Which of the following are true? (A) If materials are only added at the beginning of the production process, then the degree of completion for materials in the ending Work-id-Process Inventory is always 100% (B) If materials are only added at the beginning of the production process, then the degree of completion for materials in the ending Work-in-Process Inventory will be the same as the degree of completion for the conversion costs. Only Aste o Only Bistrue Both A and B are true O Neither A nor B are true