问题详情

What has happened in Australia where plain packaging is implemented？
A.Premature death rates resulting from smoking have declined.
B.The number of smokers has dropped more sharply than in the UK.
C.The sales of tobacco substitutes have increased considerably.
D.Cigarette sales have been falling far more quickly than in the UK.请帮忙给出正确答案和分析，谢谢！