A literature review will have to answer the questions:
(A) What area should not be investigated?
(B) What type of research has been done in the area?
(C) What research methods have been used?
(D) What area has not been investigated?
(E) What methods should not have been used in earlier studies?
Choose the correct answer from the options given below:
1
(A), (B), (C) only
2
(B), (C), (D) only
3
(D), (C), (E) only
4
(D), (E), (A) only