Which symbol represents the logical 'NOR' operation (Neither PPP nor QQQ)?
¬(P∨Q)\neg (P \lor Q)¬(P∨Q)
¬(P∧Q)\neg (P \land Q)¬(P∧Q)
¬P∧¬Q\neg P \land \neg Q¬P∧¬Q
¬P∨¬Q\neg P \lor \neg Q¬P∨¬Q