Which of the following would evolve hydrogen from dilute nitric acid?

Nitric acid is both a strong acid and a powerful oxidizer.

It produces metal salts, water and nitrogen oxides when it reacts with metals. Magnesium and manganese, however, combine with extremely diluted nitric acid to produce salt and hydrogen.
The reaction of nitric acid with all the elements given in option :
Mg + HNO₃ $\to$ Mg(NO₃)₂ +H₂
Fe + HNO₃   $\to$ Fe(NO₃)₂ + H₂O +NO
Cu + HNO₃ $\to$Cu(NO₃)₂  + H₂O + NO₂
Zn + HNO₃  $\to$Zn(NO₃)₂ + H₂O + NO₂
In only magnesium (Mg) hydrogen evolves as a gas.