Which of the following investments would have the highest present value (i.e. be most valuable)? Assume that the nominal rate is 10% with semi-annual compounding. a. Investment A pays $1,200 at the beginning of every year for the next 20 years (a total of 20 payments). b. Investment B pays $600 at the end of every 6 -month period for the next 20 years (a total of 40 payments). c. Investment D pays $24,000 at the end of 20 years (just one payment). d. Investment E pays $1,200 at the end of every year for the next 20 years (a total of 20 payments)