Answer:
D. All of the above
Explanation:
To understand this question it is important to understand what is meant by Supply Chain and what is its scope.
Supply chain is a term that encompass the processes involved in the procurement of raw material from supplier and dispatching it to the customer. In a sense it covers most, if not all, aspects of the organisation.
Supply Chain Integration involves optimizing and aligning all process within in a supply chain, usually with a management or a software system. It improves communication and coordination with suppliers and customers and improves flow of materials
Hence the answer is D