Lucas Corporation uses the weighted-average method in its process costing system. Data concerning the first processing department for the most recent month are listed below:

Beginning work in process inventory:
Units in beginning work in process inventory	900
Materials costs	$ 9,600
Conversion costs	$ 7,700
Percent complete with respect to materials	60%
Percent complete with respect to conversion	45%
Units started into production during the month	8,100
Units transferred to the next department during the month	6,900
Materials costs added during the month	$ 115,800
Conversion costs added during the month	$ 120,500
Ending work in process inventory:
Units in ending work in process inventory	2,100
Percent complete with respect to materials	75%
Percent complete with respect to conversion	20%

What are the equivalent units for materials for the month in the first processing department?

Multiple Choice

9,000

1,575

6,900

8,475