Northern Purchased the Entire Business of Southern Including All Its

Northern purchased the entire business of Southern including all its assets and liabilities for $600,000. Below is information related to the two companies: $\begin{array}{lrr}&\text { Northern }&\text {Southern }\\\text { Fair value of assets } & 1,050,000 & 800,000 \\\text { Fair value of liabilities } & 575,000 & 300,000 \\\text { Reported assets } & 800,000 & 650,000 \\\text { Reported liabilities } & 500,000 & 250,000 \\\text { Net Income for the year } & 60,000 & 50,000\end{array}$ How much goodwill did Northern pay for acquiring Southern?

A) $100,000.
B) $300,000.
C) $200,000.
D) $150,000.