The statement pattern $(p \lor q) \to \sim r$ is logically equivalent to
- A$( \sim p \lor \sim q) \lor \sim r$
- B$( \sim p \land \sim q) \land \sim r$
- C$( \sim p \land \sim q) \lor \sim r$
- D$( \sim p \lor \sim q) \land \sim r$
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