25 Which of the following can we infer from the passage?
(A)The customs union was beneficial for overall trade among the three countries as well as each country’s tradeturnover with their partners.
(B)Russia’s tariffs became higher after it joined the customs union in 2009 due to the adjustment of duties.
(C)Kazakhstan’s overall trade increased about 80 per cent between 2009 and 2011.
(D)The growth of the customs union’s turnover reflected the crisis recovery trends in 2008