The control group A: generally has higher income than the control group B: has no difference with control group C: is group of individules who are not subject to the intervention being studied D: is group of individules who are subject to the intervention being studied

The treatment group A: is group of individules who are not subject to the intervention being studied B: is group of individules who are subject to the intervention being studied C: has no difference with control group D: generally has higher income than the control group