Among the following choose the correct relation regarding negative deviation

Negative deviation from Raoult’s law important points

a) $\Delta {\text{H}}_{\text{mix}}<0$ , exothermic dissolution, heat is evolved.

b) $\Delta {\text{V}}_{\text{mix}}<0$ , Volume is decreased during dissolution.

c) ${\text{P}}_{\text{A}}<{\text{P}}_{\text{A}}^{\text{0}}\text{XA;}{\text{P}}_B<{\text{P}}_{\text{B}}^{\text{0}}\text{XB}$

     $\therefore {\text{P}}_{\text{A}}+{\text{P}}_{\text{B}}<{\text{P}}_{\text{A}}^{\text{0}}\text{XA}+{\text{P}}_{\text{B}}^{\text{0}}\text{XB}$

d) Do not obey Raoult’s law.