Which of the following is true regarding causal research?

Which of the following is true regarding causal research?

A) Causal research describes marketing phenomena.

B) Causal research isolates causes and effects.

C) Causal research is the questions of who, what, where, when, and how.

D) Causal research is the seventh step in the marketing research process.

E) Causal research is informal and unstructured.Which of the following is true regarding causal research?
answer is E).