This topic investigates the management requirements of drug retail enterprises for drug display and storage. Prescription drugs and over-the-counter drugs are displayed in different regions, with special signs for prescription drugs and over-the-counter drugs. Do not display and sell prescription drugs in an open-shelf way. So answer a is wrong. Psychotropic drugs of Category II, toxic varieties of traditional Chinese medicine and poppy shells shall not be displayed. So answer b is wrong. Drugs sold separately in packages are stored in separate counters or special areas. So the answer C is correct. Different batches of decoction pieces should be cleaned and recorded before loading. Therefore, the answer D is correct.