A chain-sampling plan is used for the inspection of lots of size N= 427. The sample size is n=9. If the sample contains no defectives, the lot is accepted. If one defective is found, the lot is accepted provided that the samples from the 4 previous lots are free of defectives. Determine the probability of acceptance of a lot that is 2.538% defective. Select one: a. 0.7805 b. 0.6937 c. 0.8672 d. 0.2602