Which of the following statements is true？
A．Smoking is the biggest cause to deadly diseases among grown-ups.
B．The writer's main purpose of writing this story is to arouse(引起)smoker's interest, fear and notice.
C．From this passage, we can clearly conclude that the number of smokers in east Europe is much bigger than that in Latin America.
D．About one half of the Latin American men are non-smokers.
