Which of the Following Is a Major Advantage of In-Depth

Which of the following is a major advantage of in-depth interviews over focus group interviews?

A) They decrease the likelihood of participants responding in a socially desirable manner because there are no other participants to impress.
B) They allow researchers to observe the social influence process that affects consumer behavior and attitudes because group members interact with each other.
C) They eliminate the need for a trained interviewer.
D) They increase the likelihood of cross talk, thus creating synergy among participants and encouraging them to talk in detail about a topic.
E) They eliminate the need for asking probing questions.