The Essential Requirement for Different Businesses to Be "Related" Is

Multiple Choice

The essential requirement for different businesses to be "related" is that:

A) their value chains exhibit competitively valuable cross-business relationships.
B) the products of the different businesses are bought by many of the same types of buyers.
C) the products of the different businesses are sold in the same types of retail stores.
D) the businesses have several key suppliers in common.
E) the production methods they employ both entail economies of scale.