Events d and e are independent, with p(d)- 0.6 and p(d and e) - 0.18. which of the following is true? a. p(e)- 0.12 b. p(e) = 0.4 c. p(d or e)-0.28 d. p(d or e) 0.72 e. P(D or E) =0.90