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The probability that a randomly chosen male has a circulation problem is 0.25. Males who have a circulation problem are twice as likely to be smokers as those who do not have a circulation problem. What is the conditional probability that a male has a circulation problem, given that he is a smoker?
A) (1/4)
B) (1/3)
C) (2/3)
D) (1/2)
E) (2/5)