Use indirect truth tables to determine whether each set of propositions is consistent. If the set is consistent, choose an option with a consistent valuation. (There may be other consistent valuations.)
P ≡ Q
~Q ≡ R
R ≡ P
S ≡ ~P
S ≡ R
(A)Inconsistent (B)Consistent. Consistent valuation when P and Q are true and R and S are false (C)Consistent. Consistent valuation when P, Q, R, and S are true (D)Consistent. Consistent valuation when R and S are true and P and Q are false
A