Which of the Following Is Not an Obstacle or Constraint

Which of the following is not an obstacle or constraint that can keep a firm or a supply chain from realizing all of the potential cost reductions that are possible?

A) Inability of firms to adapt quickly to changing company priorities or market conditions.
B) Increasing product or service complexity.
C) Lack of data in the firm's MIS.
D) Lack of performance metrics.
E) Poor coordination of program management and/or production planning activities.