P and S Comprise an Affiliated Group That Filed Consolidated

P and S comprise an affiliated group that filed consolidated returns in 2018, 2019 and 2020. They report the following for 2018, 2019 and 2020. $\begin{array}{|l|l|l|l|} \hline & 2018 & 2019 & 2020 \\\hline \text { Parent } & 100 & 200 & 200 \\\hline \text { Subsidiary } & (500) & 100 & 100\\\hline \end{array}$ How much of the Subsidiary 2018 loss can be utilized against consolidated net income in 2019?

A) $300
B) $400
C) $240
D) $80