A. Since A was legally entitled to enter the house, Z would be liable for voluntarily causing hurt to A.
B. Z will be liable because he has acted in haste without exercising proper care and attention to ascertain whether A was an inhabitant or a house-breaker.
C. Z will not be liable because he has acted under a mistaken belief that A was a burglar.
D. Z will not be liable because he has acted in the exercise of his right of private defence of property under a misconception that A was a house-breaker.
✅ The correct answer is option D.