Which of the following Boolean expression is a tautology? [JEE Main-2021 (March)] \( \mathrm{P} ...

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Which of the following Boolean expression is a tautology?
[JEE Main-2021 (March)]
\( \mathrm{P} \)
(a) \( (p \wedge q) \vee(p \vee q) \)
(b) \( (p \wedge q) \vee(p \rightarrow q) \)
W
(c) \( (p \wedge q) \wedge(p \rightarrow q) \)
(d) \( (p \wedge q) \rightarrow(p \rightarrow q) \)
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