Draper Corporation computed the physical flow of units for Department D for the month of December as follows:

Units completedFrom work in process on December 121,000From December production69,000Total90,000Materials are added at the beginning of the process. Units of WIP at December 31 were 15,000. As to conversion costs, WIP at December 1 was 70 percent complete, and WIP at December 31 was 50 percent complete. Using the FIFO method, what are the equivalent units of production for materials and conversion costs for the month of December, respectively?

84,000; 82,800

84,000; 90,000

105,000; 82,800

105,000; 90,000

None of the above