Which one of the following is a tautology?
(1) $(p \wedge(p \rightarrow q)) \rightarrow q$
(2) $q \rightarrow(p \wedge(p \rightarrow q))$
(3) $p \wedge(p \vee q)$
(4) $p \vee(p \wedge q)$
Correct Option: 1
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