One of Mr. Okonkwo, his wife, their son and Mr. Okonkwo’s mother, a doctor and another is a lawyer.
(I) If the doctor is younger than the lawyer then the doctor and the lawyer are blood relatives (ii) If the doctor is a woman, then the doctor and the lawyer are blood relations (iii) If the lawyer is a man, then the doctor is a man.
Whose occupation do you know?

• A.Mr Okonkwo: He is a doctor
• B.Mr. Okonkwo’s son: Is a doctor
• C.Mr. Okonkwo’s mother: Is a doctor
• D.His wife: She is a doctor