Once Barriers to Trade and Investment Are Removed, Companies

Once barriers to trade and investment are removed, companies

A) can realize cost economies by centralizing production in key locations regardless of culture differences.
B) can treat a group of integrated countries like the EU as a single market and produce standardized products for it.
C) no longer have to deal with competitive practices that formerly limited their ability to realize cost economies.
D) may still find it difficult to produce a standardized product for a single multiple-country market.