<prompt> All of the following statements regarding case control and coho studies are true, Except -Cohos are chosen based on history of ExposureCoho studies require longer time frame than case control studiesCoho studies are suitable to investigate rare diseaseCoho studies yield information about more than one disease  <response>: Ans. is c i.e., Coho studies are suitable to investigate rare disease o Coho studies are inappropriate when the disease or exposure under investigation is rare. 