Callable bonds have both a yeild to maturity (ytm) and a yield to call (ytc). Which of the following statements is most correct? 1. the ytc may be higher or lower than the ytm 2. the ytc is always higher than the ytm 3. the ytm is always higher than the ytc. 4. the ytm can be calculated, but it is impossible to calculate the ytc. 5. the ytc can be calculated, but it is impossible to calculate the ytm.