Kent Company Adds Materials to Production at the Beginning of the Process

Kent Company adds materials to production at the beginning of the process in the Production Department.It uses a single-step process.Data on material for this department for October are as follows: $\begin{array}{ll}\text { Production data (units) : }\\\text { In process, beginning of October } & 10,000 \\\text { Started during October } & 60,000 \\\text { Completed and transferred out during October } & 55,000\\\text { Manufacturing cost: } &\\ \text { Work in process, beginning} &\$39,000\\ \text { Materials used in October } &\$186,000\end{array}$
The company uses the FIFO inventory method.
What is the materials cost in work in process on October 31?

A) $31,000
B) $37,500
C) $39,000
D) $46,500