The negation of `p ^^(q to r)` is ……….A. `pvv(~q v r)`B. `~p ^^(q to r)`C. `~p^^ (~q to ~r)`D. `~p vv(q ^^~r)`

The negation of `p ^^(q to r)` is ……….A. `pvv(~q v r)`B. `~p ^^(

1.	The negation of `p ^^(q to r)` is ……….A. `pvv(~q v r)`B. `~p ^^(q to r)`C. `~p^^ (~q to ~r)`D. `~p vv(q ^^~r)`
Answer» The negation of `p^^ (q to r)` is `~[pvv(qtor)]` `-=~pvv~(qtor)` `-=~pvv(q^^~r)` Hence the correct answer from the given alternative is (d).