P, L, and O are partners with capital balances of $50,000, $30,000 and $20,000 and who share in the profit and loss of the PLO partnership 30%, 20%, and 50%, respectively, when they agree to admit C for a 20% interest. If C is to contribute an amount equal to his book value share of the new partnership, how much should C contribute? A. $22,000 B. $20,000 C. $25,000 D. $18,000 E. $10,000