Read the chapter's opening case, and then answer the question.

chapter's opening case

The common beer market described in this case is an example of successful regional integration. Some may argue that regional integration represents building blocks for eventual global integration, but this does not always happen. Politically, regional integration can undermine global integration in what way?

a$.$ By discriminating against firms outside a region

b$.$ By resulting in some loss of sovereignty

c$.$ By eliminating discrimination for participating countries

d$.$ By fostering closer economic ties