Which of the following statements is a tautology?

  • A
    $q$ $\rightarrow [p \wedge (p$ $\rightarrow q)]$
  • B
    $p \wedge (p \vee q)$
  • C
    $p \vee (p \wedge q)$
  • D
    $[p \wedge (p$ $\rightarrow q)]$ $\rightarrow q$

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