Which of the following statements is true regarding the weighted-average method of process costing?

Select one:

a. It assumes that there are an equal number of units in beginning and ending inventories.

b. It assumes that the units in beginning inventory were started into production during the current period.

c. It assumes that the units in beginning inventory were finished last in the current period.

d. It assumes that the units in beginning inventory were the same percentage complete as the units in ending inventory.