A customer suspects that one brand of oatmeal fills its containers with less
oatmeal than the advertised weight. He visits three different grocery stores
at random and weighs every 10th container of this brand of oatmeal on the
shelves.
What is the sample in this study?

A. Patients who received one of the treatments at the selected hospital

B. The patient from the list who are contacted by the physicans

C. The patients from the list who are contacted by the physians

D. Patients who have been diagnosed with the illness