5. (a) If X is attacked by Y, but in retaliating, X exceeds the limits of private defense, he (X) acts lawfully.
(b) Private defence is also referred to as 'self defence' since only persons who defend themselves can rely upon this ground of justification.
(1) only statement (a) is correct.
(2) only statement (b) is correct
(3) Both statements (a) and (b) are correct
(4) Neither statements (a) nor (b) are correct.