Every one will admit that swindling one s fellow beings is a necessary practice; upon it, is based really sound commercial success ___________.

sell what you can, do not buy from a competitor

buy what you will sell to another at a higher price

Every one will admit that swindling one s fellow beings is a necessary

1.	Every one will admit that swindling one s fellow beings is a necessary practice; upon it, is based really sound commercial success ___________.
A.	sell what you cannot buy back
B.	buy what you will sell to another at a higher price
C.	buy cheap and sell dear
D.	sell what you can, do not buy from a competitor
Answer» D. sell what you can, do not buy from a competitor