【单选题】

Which of the following can be said NOT to be true of e-tailers, according to the author
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.