All production costs have been steadily rising in Donner Company for several periods and the company maintians large work in process inventories, what is the Donner Company's cost per equivalent unit, as computed using FIFO method?

a) the same as that computed under the weighted average method

b) higher than that computed under the weighted average method

c) Lowe than that computed under the weighted average method

d) it could be the lower than, the same as, or higher than that computed under the weighted average method