Which of the following is not correct regarding administration of calcium gluconate in hypocalcemia?

Correct option is D

Calcium gluconate must be given slow IV infusion, not rapid bolus, as fast administration causes arrhythmias and cardiac arrest.
Explanation of options: (a) ✔ True; slow IV push over 10 min is recommended. (b) ✔ True; used as cardioprotective agent in hyperkalemia. (c) ✔ True; oral calcium gluconate is safe for mild cases. (d) ✘ Incorrect; never give rapid IV bolus due to arrhythmia risk.