1 point Suppose a bond fund has an initial portfolio value of $100 million. The following table provides the market value of the portfolio at the end of each of the next four months. Assuming this fund experiences no cash withdrawals or contributions over this period, what is the portfolio's dollar-weighted return over this four-month evaluation period? Month 1 2 3 4 4,47% 4.66% 4.29% 4.85% Market value ($ millions) 50 150 75 120