Total vapour pressure of mixture of 1 mole of volatile component  $\mathrm{A}\left({\mathrm{P}}_{\mathrm{A}}^0=100\mathrm{mm}\mathrm{Hg}\right)$and 3 mole of volatile component $\mathrm{B}\left({\mathrm{P}}_{\mathrm{B}}^0=80\mathrm{mm}\mathrm{Hg}\right)$is $90\mathrm{mm}\mathrm{Hg}$. For such case:

all  the above statements are correct

there is positive deviation from Raoult’s law

force of attraction between A and B is smaller than that between A and A or between B and B

boiling point has been lowered