Which of the following are useful tips in preparing questions for a structured interview?

(A) Introductory questions should be related to pleasantries.

(B) Introductory questions should be related to the research topic.

(C) Questions can be grouped, if the list of questions is long.

(D) General questions should precede specific questions.

(E) Repeat the personal questions again and again to test the truthfulness of the reponses of the interviewee.

Choose the correct answer from the options given below: