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If c denotes the contradiction , then dual of the compound statement $\sim p\wedge(q\vee c)$

$\sim p\vee(q\wedge t)$

$\sim p\wedge(q\vee t)$

$p\vee(\sim q\vee t)$

$\sim p\vee( q\vee c)$

Option A

For duality , replace ' $\vee$ ' by ' $\wedge$ ' and ' $\wedge$ ' by ' $\vee$ ,

we get

Dual of the statement

$\sim p \wedge (q\vee c)$
$\equiv \sim p \vee (q \wedge t)$

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