January 1, a sole proprietorship's assets totaled P210,000, and its liabilities amounted to P120,000. During the year, owner vestments amounted to P72,000, and owner withdrawals totaled P75,000. At year-end, assets totaled P270,000, and abilities amounted to P171,000. The amount of net income for the year was P6,000 PO P9,000 P12,000