In the Context of a Drop-Off Survey, Which of the Following

In the context of a drop-off survey, which of the following is true?

A) It is a face-to-face personal interview that takes place in a shopping mall.
B) It is a face-to-face structured question-and-answer exchange conducted in a respondent's home or at times in an office environment.
C) In this survey, a representative of the researcher hand-delivers a self-administered questionnaire to selected respondents.
D) FCC regulations prevent the use of drop-off surveys.
E) In this survey, the researcher arranges for a computer-assisted telephone interview with the respondents.