(i) There is a family of 5 persons A, B, C, D and E.
(ii) They are working as a doctor, a teacher, a trader, a lawyer and a farmer.
(iii) B, an unmarried teacher, is the daughter of A.
(iv) E, a lawyer, is the brother of C.
(v) C is the husband of the only married couple in the family.
(vi) Daughter-in-law of A is a doctor.
Who is the trader in the family ?