Costs and Price Differences Among Competing Companies Can Have Origins

Costs and price differences among competing companies can have origins in activities performed by

A) whether the company has a longer or shorter value chain than its close rivals.
B) value chains of the company's suppliers.
C) developing a "worry list" of problems and issues for managerial strategy making.
D) the company's internally performed activities (its own value chain) ,but also on costs in the value chain of its suppliers and distribution channel allies.
E) value chains of a company's distributors and retail dealers and forward channel allies.