The Most Difficult Problem with Making the Financial Approach to Choosing

The most difficult problem with making the financial approach to choosing a channel structure operational is:

A) The reluctance on the part of firms to use it.
B) Obtaining accurate estimates of future revenues and costs from alternative channel structures.
C) The great expense involved in employing this method.
D) The inadequate capacity of existing computer systems to handle the mass of data involved.
E) Poor attitudes on the part of managers toward using it.