Which of the following statements is true regarding process costing? Select one: 

A. All costs must be assigned to individual jobs or production runs. 

B. All products must follow the same path through production to reach the Finished Goods Inventory. 

C. All products in a particular batch are homogenous. 

D. A company must use the weighted average cost-flow assumption in tracking the ending balance in each Work in Process Inventory account. 

E. All of these statements are true.