just need help with 12 & 13 please!

Use the information about Sambava Company to answer the following 4 questions:- Sambava Company has a process costing system. Information about units processed and processing costs incurred during a recent month in the Refining Department follow: The beginning work in process inventory had $10,946 of processing cost attached to it at the beginning of the month. During the month, the Department incurred an additional $289,954 in processing cost. 10. Assuming that the company uses the weighted-average method, what are the equivalent units for processing costs for the Department for the month? A. 94,000 C. 100,000 (B. 100,30094,000100% complete: 11. Assuming that the company uses the weighted-average method, what is the cost per equivalent unit for processing for the month? A. $2.89 B.D.$2.98$3.08 10,940+285754) C. $3.00 (begginming wip + coots added) 12. Assuming that Sambava Company uses the FIFO method, what are the equivalent units for processing costs for the Department for the month? A. 97,300 B. 91,300 C. 94,000 D. 100,300 13. Assuming that Sambava Co uses the FIFO method, what is the cost per equivalent unit of A. $2.89 B. $2.98 C. $3.00 D. $3.09