Research on the "Dark Side of Buyer-Supplier Relationships" Has Identified

Research on the "dark side of buyer-supplier relationships" has identified the following potential problem(s) with overcommitting to supplier partnerships in the long-term:

A) loss of objectivity.
B) ineffective decision making.
C) costly investments.
D) loss of objectivity and ineffective decision making.
E) loss of objectivity,ineffective decision making and costly investments.