The Relevance of the Product Life-Cycle Theory in the Modern

The relevance of the product life-cycle theory in the modern world seems more limited because:

A) many countries have increasingly invested in the U.S.labor market over the past century.
B) with the diminishing strength of the U.S.dollar,it loses the ability to generalize trade globally.
C) it holds true only for the brief U.S.dominance of the global economy.
D) historically,it has provided inaccurate explanations of international trade patterns.