When Computing the Conversion Cost Per Equivalent Unit Under the Weighted-Average

When computing the conversion cost per equivalent unit under the weighted-average method of process costing, all of the following information would be needed except:

A) the number of units completed during the current accounting period.
B) the conversion work performed during the current period on the ending work-in-process inventory.
C) the conversion work performed during the current period on the beginning work-in-process inventory.
D) the conversion cost incurred in the beginning work-in-process inventory.
E) the conversion cost incurred during the current accounting period.