Today, Courtney wants to invest less than $5,000 with the goal of receiving $5,000 back some time in the future. Which one of the following statements is correct? a. The period of time she has to wait until she reaches her goal is unaffected by the compounding of interest. b. The lower the rate of interest she earns, the shorter the time she will have to wait to reach her goal. c. She will have to wait longer if she earns 6 percent compound interest instead of 6 percent simple interest. d. The length of time she has to wait to reach her goal is directly related to the interest rate she earns. e. The period of time she has to wait decreases as the amount she invests today increases