【单选题】The reasons why the author says the slogan does capture two awkward truths European exporters must now confront include the followings except______.
A.
EU hope to persuade foreign countries to open their markets by offering to open its owns although it is not obvious to whom the Europeans should make their offers
B.
other countries were repelling EU companies at the border with high tariffs
C.
European companies are now part of elaborate global supply chains
D.
efforts to protect some of European companies from foreign competition may deprive others of the cheap inputs which these EU companies need to thrive in world markets