Cub Company (a US Corp.) purchased ten thousand shares of Lion Corporation stock in 2017 for $50 per share and classified the investment as trading. Lions market value was $60 per share on December 31, 2017. During 2018, Cub sold all of its Lion stock at $70 per share. For 2018, Cub would report.

A realized gain of $100,000

A realized gain of $200,000

A realized gain of $300,000

An unrealized gain of $200,000