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If q is false and (p ^^ q) harr r is als...

If `q` is false and `(p ^^ q) harr r` is also true then which of the following are tautology (A) `(pvvr) rarr (p^^r)` (B) `(pvvr)` (C) `(p^^r)rarr (pvvr)` (D) `p^^r`

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