Partner a Began the Year with $20,000 in Capital

Partner A began the year with $20,000 in capital. On June 1, 2008, the partner contributed another $20,000. On September 1, 2008, the partner withdrew $15,000 from the partnership. Withdrawals in excess of $5,000 are charged to the partner's capital account. The partnership's fiscal year end is December 31. The annual weighted-average capital balance is ____.

A) $25,000
B) $26,667
C) $28,334
D) $30,000