The contra positive of \( (\sim p \wedge q) \rightarrow \sim r \) is (A) \( (p \wedge q) \righta...

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The contra positive of \( (\sim p \wedge q) \rightarrow \sim r \) is
(A) \( (p \wedge q) \rightarrow r \)
(B) \( (p \vee q) \rightarrow r \)
(C) \( r \rightarrow(p \vee \sim q) \)
(D) none of these
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