A Cohort Study Is _____________

A cohort study is _____________.

A) any study that examines information on many cases at one point in time
B) any research that examines information from many units or cases across more than one point in time
C) longitudinal research in which information can be about different cases or people in each of several time periods
D) longitudinal research in which information about a category of cases or people that shared a common experience at one time period is traced across subsequent time periods