21. You purchase a bond whose maturity is longer than your horizon. Which is best for you (for the purpose of Rate-of-Return)?: 4 points a) A high yield on the investment date and a high yield on the horizon date b) A low yield on the investment date and a high yield on the horizon date c) A high yield on the investment date and a low yield on the horizon date d) A low yield on the investment date and a low yield on the horizon date