Mark the letter A, B, C or D to indicate the sentence that is best written from the words/phrases given.Câu hỏi Poor/ not always/ unhappy/ than/ rich. A. Being poor is not always unhappier than the rich. B. Being poor is always not unhappier than the rich. C. The poor not always unhappier than the rich. D. The poor is not always unhappier than the rich.