Which of the Following Statements Is the MOST Accurate

Which of the following statements is the MOST accurate?

A) Trade of EU countries with other EU countries has increased since the euro was introduced.
B) Trade of EU countries with other EU countries has decreased since the euro was introduced.
C) Trade of EU countries with other EU countries has increased in some years and decreased in other years since the euro was introduced.
D) Trade of EU countries with other EU countries can no longer be measured since both trading parties have the same currency.
E) Trade of EU countries with North American countries has decreased since the euro was introduced.