Which of the following is always true
Which of the following is always true
- A
$(p \Rightarrow q) \equiv \;\sim q \Rightarrow \;\sim p$
- B
$\sim (p \vee q) \equiv \vee \;p\; \vee \sim q$
- C
$\sim (p \Rightarrow q) \equiv p\; \wedge \sim q$
- D
$\sim (p \vee q) \equiv \;\sim p\;\; \wedge \sim q$
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