Blue fin started the current year with assets of $712,000, liabilities of $356,000 and common stock of $212,000. during the current year, assets increased by $412,000, liabilities decreased by $56,000 and common stock increased by $287,000. there was no payment of dividends to owners during the year. what was the amount of blue fin's change in total stockholders' equity during the year?
a) $287,000 increase
b) $231,000 increase
c) $468,000 increase