In Which of the Following Cases Is a Firm Employing

In which of the following cases is a firm employing omni-channel retailing?

A) Lues Wholesalers markets its products to retailers through personal selling.
B) Russel Stores' sales operations are based on heavy outbound telephone marketing.
C) E-tailers such as Hammon.com market their products through a strong online presence.
D) Local convenience stores promote products through word-of-mouth marketing.
E) Wingate Retail sells its products through e-tailers and hundreds of physical superstores.