Read the passage given below and answer the items that follow. A, B, C, D, E, F are members of a family. They are engineer, stenographer, doctor, draughtsman, lawyer and judge (not in order). A, the engineer is married to the lady stenographer. The judge is married to the lawyer. F, the draughtsman is the son of B and brother of E. C, the lawyer is the daughter- in- law of D. E is the unmarried doctor. D is the grandmother of F. There are two married couples in the family. Which of the following is/are couple/couples?

Here's a step-by-step deduction: 1. "C, the lawyer is the daughter-in-law of D." This tells us C is female and married to D's son. 2. "The judge is married to the lawyer." Combining with point 1, C (the lawyer) is married to the Judge. Therefore, D is the mother of the Judge. 3. "D is the grandmother of F." Since D is the mother of the Judge, the Judge must be a parent of F. 4. "F, the draughtsman is the son of B and brother of E." This means B is a parent of F. 5. From points 3 and 4, since the Judge is a parent of F and B is a parent of F, B must be the Judge. 6. So, B is the Judge (male) and is married to C (the lawyer, female). This forms the couple BC. 7. We know D is the mother of B (the Judge). D is female (as she is a grandmother and C is her daughter-in-law). 8. "A, the engineer is married to the lady stenographer." 9. We have identified B as Judge, C as Lawyer, F as Draughtsman, E as Doctor (unmarried). 10. The remaining profession is Stenographer, and the remaining person is D. Therefore, D is the Stenographer. 11. Since A (the engineer) is married to the lady stenographer, A is married to D. This forms the couple AD. 12. We have found two couples: AD and BC. This matches the condition "There are two married couples in the family." Thus, the couples are AD and BC. The final answer is C) Both AD and BC.