Statement I:  Corrosion of metals considered as an electrochemical phenomenon.
Statement II:  Mg and Zn can be used as sacrificial electrodes during the corrosion of iron the electrode.

In light of the above statement, choose the correct option among the following:
 
1.  Statement I is correct but Statement II is incorrect.
2.  Statement I is incorrect but Statement II is correct. 
3.  Both Statement I and Statement II are incorrect. 
4.  Both Statement I and Statement II are correct.
Subtopic:  Corrosion |
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