Time value of money and retirement Today, Sam and Elizabeth each have $600,000 in an investment account.No other contributions will be made to their...

Time value of money and retirement

Today, Sam and Elizabeth each have $600,000 in an investment account. No other contributions will be made to their investment accounts.  Both have the same goal: They each want their account to reach $1 million, at which time each will retire. Sam has his money invested in risk-free securities with an expected annual return of 2%. Elizabeth has her money invested in a stock fund with an expected annual return of 8%. How many years after Elizabeth retires will Sam retire?

a.   6.64

b.  12.55

c.  19.16

d.  20.23

e.  25.80