What Is/are the Main Disadvantage(s) of Using a Cross‐sectional Survey

What is/are the main disadvantage(s) of using a cross‐sectional survey to assess the association between marijuana use and schizophrenia? (Select all that apply)

A) Cross sectional studies are affected by recall bias
B) Cross sectional studies are not generalisable to clinical populations
C) It is not possible to determine whether marijuana use preceded the onset of schizophrenia
D) Having schizophrenia can distort memories, thus leading to recall bias