The contrapositive of $(\sim p \wedge q) \rightarrow (q \wedge \sim r)$ is

  • A
    $(p \vee \sim q) \rightarrow (\sim q \vee r)$
  • B
    $(\sim q \vee r) \rightarrow (\sim p \vee q)$
  • C
    $(\sim q \wedge r) \rightarrow (\sim q \wedge p)$
  • D
    $(\sim q \vee r) \rightarrow (p \vee \sim q)$

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