As it is with traditional pharmacies, on-line drugstores rely on prescriptions to be successful, since it is primarily prescriptions that attract the customers, who then also buy other health related items.


A.. As it is with traditional pharmacies, on-line drugstores rely on prescriptions to be successful

B. As with the case of traditional pharmacies, on-line drugstores rely on prescriptions to have success

C. As is the case with traditional pharmacies, prescriptions are the cornerstone of a successful on-line drugstore

D. As traditional pharmacies, so on-line drugstores rely on prescriptions to be successful

E. Like traditional pharmacies, the cornerstone of a successful on-line drugstore is prescriptions.
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