Which of the Following Is an Example of a Cohort

Multiple Choice

Which of the following is an example of a cohort study?

A) Compare lifetime exposure to coal plant emissions between individuals with lung cancer and individuals without lung cancer in the general population.
B) Measure lifetime exposure to coal plant emissions and the incidence of lung cancer in a group of individuals living in a small town.
C) Question all people in an area about their exposure to coal plant emissions and whether they have any lung diseases.
D) Examine the incidence of lung disease in all females over the age of 50 in a city that is close to a coal plant.