Which two of the following are the primary reasons why the realized yield on a bond differs from the yield to maturity? I. purchasing a bond at a value other than par II. selling prior to maturity at a value other than par III. paying coupon payments semiannually rather than annually IV. reinvesting coupon payments at current market rates

1. I, II, and III only

2. I and III only

3. I, II, III, and IV

4. II, III, and IV only

5. II and IV only