Ajax Beverages Holds 40% of the Stock of Bubbly Bottler

Ajax Beverages holds 40% of the stock of Bubbly Bottler, acquired at a cost equal to 40% of Bubbly's book value at the time of purchase. This is a significant influence investment. At the start of 2021, Ajax reports the investment at a balance of $100,000. In 2021, Bubbly reports net income of $1,000 and $50 in other comprehensive income. Bubbly pays no dividends in 2021. The market value of Ajax's investment in Bubbly stock increases by $500 during 2021.
At what amount does Ajax report the investment at the end of 2021?

A) $100,500
B) $100,420
C) $100,400
D) $100,450