Which of the following statements regarding process costing…

Which of the following statements regarding process costing are true? When computing the cost of the units completed and transferred out, it is necessary to consider the percentage of completion of the units in beginning inventory. When calculating the cost per equivalent unit of production, prior period production costs are combined with current period production costs. If all direct materials are added at the beginning of the production process, the number of equivalent units of production for direct materials always equals to the number of units completed and transferred out.