Which of these three countries countries signs USMCA to Replace NAFTA in G20 Summit 2018?

Question

Accepted Answer

USA, Mexico and Canada. A is correct because the USA, Mexico, and Canada are the three countries that signed USMCA to replace NAFTA. B is incorrect because Germany, Japan, and Denmark are not the signatories of USMCA. C is incorrect because China, India, and Japan are not the group that replaced NAFTA with USMCA. D is incorrect because option A correctly identifies the three signing countries.