A,D=unmarried ladies. B=male (brother of C). E=husband=male. So C must be E's wife=lady. Ladies: A,C,D. Men: B,E. All three named groups (ABC,BCD,CDE) contain a male (B or E), so none is all-ladies. True all-ladies group is A,C,D - not offered.
Final Answer: None of the above, option (4).