Write the chemical equation for the reaction when magnesium reacts with dilute HNO3.
a. Mg + HNO3 → Mg(NO3)2 + H2
b. Mg + 2HNO3 → Mg(NO3)2 + H2O + NO
c. 3Mg + 4HNO3 → 3Mg(NO3)2 + 2H2O + NO
d. Mg + HNO3 → MgO + NO2 + H2O