What are the three objectives a marketing research project could$$ have?

Question content area bottom

Part $1$

A$.$

$$Primary$,$ secondary$,$ internal

B$.$

$$Causal$,$ explanatory, internal

C$.$

$$Exploratory$,$ descriptive, causal

D$.$

$$Exploratory$,$ descriptive, primary

E$.$

$$Descriptive$,$ explanatory, causal