Company P Purchased an 80% Interest in the Company S

Company P purchased an 80% interest in the Company S on January 1, 2016, for $600,000.Any excess of cost is attributed to the Company's building with a 20-year life.The equity balances of Company S are as follows: ?

$$\begin{array} { l r r } & \text { January } 1,2016 & \text { December } 31,2019 \\\text { Common stock, } \$ 10 \text { par } & \$ 100,000 & \$ 140,000 \\ \text { Other paid-in capital } & 200,000 & 280,000 \\\text { Retained earnings }& 250,000 & 450,000\end{array}$$
The only change in paid-in capital is a result of a 40% stock dividend paid in 2018.The cost to simple equity conversion to bring the investment account to its December 31, 2019, balance is ____.

A) $30,000
B) $136,000
C) $160,000
D) $256,000