Question 10(1 point)

Suppose a retrospective study is conducted to determine if smoking is associated with the disease of lung cancer. Participants are assigned to either a treatment group or a control group. Participants in the two groups are similar except that _______?

Question 10 options:

A)

Participants in the treatment group smoke whereas those in the control group do not.

B)

Participants in the treatment group smoke and have lung cancer whereas those in the control group neither smoke nor have lung cancer.

C)

Participants in the control group smoke and have lung cancer whereas those in the treatment group neither smoke nor have lung cancer.

D)

Participants in the treatment group smoke but do not have lung cancer whereas those in the control group do not smoke but have lung cancer

E)

Participants in the treatment group have lung cancer whereas those in the control group do not.