Which of the Following Is False Regarding the Tearoom Trade

Which of the following is false regarding the Tearoom Trade Study?

A) Laud Humphreys conducted research on homosexual activities in public bathrooms for his PhD dissertation.
B) For the study, Laud Humphreys stationed himself in public bathrooms and played the role as watchqueen while observing hundreds of homosexual activities.
C) Laud Humphreys followed some of the men he observed, recorded their license plate numbers, and later visited their home to interview them claiming to be a health-service interviewer.
D) His dissertation proposal was reviewed and approved by the IRB; therefore, the dissertation was not problematic at all.