The boxer Lesra finds very fascinating has, in a sense, something to do with all of the following EXCEPT ______

A．E-tailers have got more head-shaking than before for e-commerce.
B．E-tailers have solved almost the problems that once troubled them.
C．E-tailers have opened up the online channel for retail supermarkets.
D．E-tailers have provided more than just the online selling channel.

A．developed their own unique sales system
B．formed a viable sales channel themselves
C．become a part of the whole retailing strategy
D．established their own reasonable supermarket