Which one of these equations relating spot rates with forward rates is wrong? a) (1 +24)4 = (1 + 21)*(1 + f)(1 + f2)1 (1 + $3) b) (1 +24)4 = (1 + z2)2(1 + f2)1 (1 + $3)1 c) (1 + 24)4 = (1 + 2])+(1 + 2f1)2 (1 + 1f3) d) (1 +24)4 = (1 + z2)2(1 + f2)2 Select one: a. a is wrong b. b is wrong c. c is wrong d. d is wrong e. None of the above. They are all correct