Four years ago, Zihuan invested $21.400. In 3 years from today, he expects to have 539.600. if Zihuan expects to earn the same annual return after 3 years from today as the annual rate implied from the past and expected values given in the problem, then how much does Zihuan expect to have in 8 years from today? a. 561463 (plus or minus 520) b. 580,013 (plus or minus 520) c. 543.239 (plus or minus 520) d. 555.471 (plus or minus 520) e. None of the other alternatives is within 520 of the correct