Which of the Following Is a Barrier to the Integration

Which of the following is a barrier to the integration of separate organizations in the supply chain?
(I) conflicting objectives of the companies in the chain
(II) different capacity levels of the companies in the chain
(III) reluctance of the organizations in the chain to allow other organizations access to their data

A) I only
B) I and II
C) II and III
D) I and III
E) I, II, and III