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.