from previous question , its clear
A-D are Couple , A Is lawyer (male) , D is housewife (female )
C-F are couple , C is accountant(male) , F is lecturer (female)
E - architect , B - housewife
now "No lady in the group is either an architect or an accountant." from this its clear E is Male and B is female
so here 3 male (A,C,E) and 3 female( D,F,B)
hence ANS B) - 3 .