Which of the Following Statements Is/are True About Qualitative Studies

Which of the following statements is/are true about qualitative studies?

A) They are just as likely to employ tightly controlled, inflexible designs as are quantitative studies.
B) They tend to employ flexible designs and subjective methods-often with small samples of research participants-in seeking to generate tentative new insights, deep understandings, and theoretically rich observations.
C) They are devalued in EBP.
D) They are most applicable when we seek to determine whether a particular intervention is really the cause of a particular outcome.
E) Both b and c are true.