Which of the Following Is a Major Threat Facing the Brick-And-Mortar

Which of the following is a major threat facing the brick-and-mortar manufacturers when they add an e-commerce channel?

A) It creates the possibility of a backlash from the existing intermediaries.
B) It increases the likelihood of product cannibalization.
C) Successful implementation leads to a significant increase in operational costs.
D) It significantly increases the resource requirements of the organization.
E) E-commerce channels often have low potential for attracting customers.