A set of premises is provided: 1. P∨QP \lor QP∨Q, 2. P ⟹ RP \implies RP⟹R, 3. Q ⟹ SQ \implies SQ⟹S. What can be validly inferred?
R∨SR \lor SR∨S
R∧SR \land SR∧S
P∧QP \land QP∧Q
¬R ⟹ S\neg R \implies S¬R⟹S