Read the following information to answer the given questions.
(i) A, B, C, D, E and F are six family members.
(ii) There is one doctor, one lawyer, one engineer, two students and one housewife.
(iii) There are two married couples in the family.
(iv) F, who is a doctor, is the father of E.
(v) A is a student and her husband is not a lawyer.
(vi) B is the grandmother of D and is a housewife.
(vii) C is the father-in-law of A and is an engineer.
(vill) D is the sister of E.
Who is a doctor?