Which statement is not true about pretests?

A、Totheextentpossible,apretestshouldinvolveadministeringthequestionnaireinanenvironmentandcontextsimilartothatoftheactualsurvey.
B、
C、varietyofinterviewersshouldbeusedforpretests.
D、Theprojectdirector,theresearcherwhodevelopedthequestionnaire,andotherkeymembersoftheresearchteamshouldconductsomepretestinterviews.
E、Itisagoodpracticetoemployonlyexperiencedinterviewerstoconductpretests.
F、AACSG:ReflectiveThinking