I'm confused as to how to get this answer. If you can show your train of thought, that would be great! Thank you

In the month of June, a department had 19400 units in beginning work in process that were 75% complete. During June, 90700 units were transferred into production from another department. At the end of June there were 9200 units in ending work in process that were 35% complete. Materials are added at the beginning of the process, while conversion costs are incurred uniformly throughout the process. The equivalent units of production for conversion costs for June were 100900 equivalent units. 90700 equivalent units. 104120 equivalent units. O 110100 equivalent units