Which of the Following Is True of Discovery Questions

Which of the following is true of discovery questions?

A) They are preceded by activation questions.
B) They consist of closed-end questions and are used in the fourth stage of the ADAPT questioning system.
C) They are used to smooth the transition from needs discovery into the presentation and demonstration of a proposed solution's benefits.
D) They focus at a micro level and probe for further details needed to fully clarify and understand a buyer's problems.
E) They confirm a buyer's desire to seek a solution to his or her problem.