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propositional logic

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If Salman Khan is guilty, then no witness is lying unless he is afraid. There is a witness who is afraid. Which of the following statements is true?

   
   
 

(A) Salman Khan is guilty 
 

(B) Salman Khan is not guilty
 

(C) There is a witness who is lying
 

(D) From these facts one cannot conclude that Salman Khan is guilty

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