In a conductometric titration, small volume of titrant of higher concentration is added stepwise to a larger volume of titrate of much lower concentration, and the conductance is measured after each addition. The limiting ionic conductivity (Λ⁰) values (in mS m² mol⁻¹) are: Ag⁺ 6.2, K⁺ 7.4, Na⁺ 5.0, H⁺ 35.0, NO₃⁻ 7.2, Cl⁻ 7.6, SO₄²⁻ 16.0, OH⁻ 19.9, CH₃COO⁻ 4.1. Match List-I—(P) KCl titrated with AgNO₃; (Q) AgNO₃ titrated with KCl; (R) NaOH titrated with HCl; (S) NaOH titrated with CH₃COOH—with the conductance-versus-volume graphs in List-II and choose the correct option.