Ajax Company Was Founded in 2012

Ajax Company was founded in 2012. Its yearly earnings are shown here:
2012: Net income of $4,000
2013: Net income of $23,000
2014: Net income of $2,000
2015: Net loss of $30,000
No dividends were paid. At the end of the year 2015, what amount would be shown on the balance sheet for Retained earnings?

A) Negative $1,000
B) Positive $29,000
C) Positive $31,000
D) Negative $30,000