Logan's supervisor is getting complaints about their recent bank information system. More specifically, 200 customers have reported errors in their bank statements. Charles wants him to prepare a sample from a list of 200 customers who complained about errors in their statements. Because Logan took CL440 he knows that a ________ could ensure the sample is balanced geographically by selecting five customers from each of the four zip codes; however, a _______ might select every tenth customer for review; while a _____________ might select any of the 200 customers. a. random sample; non-random sample; pseudorandom sample b. stratied sample; semi- comprehensive sample; random sample c. comprehensive sample; stratified sample; a random sample d. stratified sample; systematic sample; random sample e. none of these are correct