Assertion (A): Heat of neutralisation for both `HNO_(3)` and `HCI` with `NaOH` is `53.7 kJ per mol^(-1)`.
Reason (R ) : `NaOH` is a strong electrolyte/base.
A. If both (A) and (R ) are correct, and (R ) is the correct explanation for (A).
B. If the both (A) and (R ) are correct, but(R ) is not a correct explanation for (A).
C. If (A) is correct, but (R ) is incorrect.
D. If (A) is incorrect, but (R ) is correct.