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

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

`(p vee r) to(p wedge r)`

`p vee r`

`p wedge r`

`(p wedge r) rarr (p vee r)`

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