Mark the letter A, B, C or D to indicate the sentence that is closest in meaning to each of the following questions.Câu hỏi This city is the same as it was in the 1990s. A. This city has changed in the 1990s. B. This city hasn't changed in the 1990s. C. This city has changed since the 1990s. D. This city hasn't changed since the 1990s.