High-cost, low standardization of questioning and limited geographic dispersion are disadvantages characteristic of ______ surveys.A. telephoneB. personal interviewC. mailD. none of the above.Which of the following should be considered before a researcher decides to use deception in a study?A. importance of the studyB. availability of alternative methodsC. physical danger of psychological harm to subjectsD. all of the aboveConcerning data distributed by media, researchers should be aware thatA. data are copyrighted and thus of limited use.B. they generally refer to product flows through retail outlets.C. data may cover only limited aspects of a topic.D. government regulations severely limit some forms of data.E. all of the above.