Hershon Inc Component P922 Is Expected to Have a Useful Life of 2

Hershon Inc. acquires a new machine. It is comprised of 2 different identifiable components the P922 and the B14. Each of these components is expected to be overhauled at different intervals. The acquisition cost of the entire machine is as follows:

$\begin{array}{|l|r|}\hline \text { Component P922: } & \$ 198,000 \\\hline \text { Component R14: } & \$ 240,000 \\\hline \text { Total } & \$ 438,000 \\\hline\end{array}$

Component P922 is expected to have a useful life of five years and a residual value of $\$ 20,000$ before the first major overhaul is required. Component R14 is expected to have a useful life of seven years and a residual value of $\$ 15,000$ before its first overhaul.
-Assuming, the double declining balance is used, what will be the net book value of component R14 at the end of year one?

A) $205,321
B) $179,455
C) $171,429
D) $140,000