During the current year, Young and Zinc maintained average capital balances in their partnership of $160,000 and $100,000, respectively. The partners receive 10 percent interest on average capital balances, and residual profit or loss is divided equally. Partnership profit before interest was $4,000. By what amount should Zinc's capital account change for the year? $1,000 decrease. $2,000 increase. $11,000 decrease. $12,000 increase