Abis Corporation uses the weighted-average method in its process-costing system. This month, the beginning inventory in the first processing department consisted of 80 units. The costs and percentage completion of these units in beginning inventory were:

Cost Percent Complete
Material Costs $6,000 50%
Conversion costs $9,900 30%

A total of 9,200 units were started, and 8,200 units were transferred to the second processing department during the month. The following costs were incurred in the first processing department during the month:
Cost
Material Costs $113,900
Conversion Costs $322,500

The ending inventory was 80% complete with respect to materials and 20% complete with respect to conversion costs.

Note: Your answere may differ from those offered below due to rounding error. In all cases, select the answer that's the closest to the answer you computed. To reduce rounding error, carry out all computations to at least 3 decimal places.

The cost per equivalent unit for materials for the month in the first processing department is closest to
A.$11.82
B.$12.44
C.$11.99
D.$11.39