What Are the Reasons Cohort Studies Cannot Establish a True

Multiple Choice

What are the reasons cohort studies cannot establish a true cause-and-effect relationship between the study variables? Select all that apply.

A) Cohort studies can suffer from participants having recall bias.
B) Cohort studies do not have randomized control and treatment groups.
C) Cohort studies cannot control for extraneous factors, which can potentially affect the study outcomes.
D) Cohort studies are not as rigorous as experimental studies.