Which of the following is correct?

(A) Descriptive research is concerned with status and the most prevalent technique in the survey.

(B) Qualitative research is characterized by intensive first-hand presence and data is conducted through observation and interviews.

(C) Analytical research involves in‐depth study and evaluation in an attempt to explain complex phenomena.

(D) Epidemiological research is a form of experimental research.

Choose the correct answer from the options given below: