Which expression is the logical dual of (P∧Q)∨R(P \land Q) \lor R(P∧Q)∨R?
(P∨Q)∧R(P \lor Q) \land R(P∨Q)∧R
(P∧Q)∨R(P \land Q) \lor R(P∧Q)∨R
(P∨Q)∨R(P \lor Q) \lor R(P∨Q)∨R
(P∧Q)∧R(P \land Q) \land R(P∧Q)∧R