Of the four attributes of a national or country-specific environment that have an important impact on the global competitiveness of companies located within that nation, which describes the related and supporting industries?
a. A nation's position in factors of production, such as skilled labor or the infrastructure necessary to compete in a given industry
b. The nature of home demand for the industry's product or service
c. The conditions in the nation governing how companies are created, organized, and managed, and the nature of domestic rivalry
d. The presence or absence in a nation of supplier industries and related industries that are internationally competitive