The correct order in the good$-$services cont$$nuum is

Select one:

a$.$ pure goods $-$ pure services $-$ core services $-$ core goods

b$.$ core goods $-$ core services $-$ pure goods $-$ pure services

c$.$ pure goods $-$ pure services $-$ core goods $-$ core services

d$.$ pure services $-$ core Services $-$ core goods $-$ pure goods

e$.$ pure goods $-$ core goods $-$ core services $-$ pure services