Isolation Of Elements

Given are two statements one is labelled as Assertion A and other is labelled as Reason R.

Assertion A : Magnesium can reduce Al₂O₃ at a temperature below 1350\(^\circ\)C, while above 1350\(^\circ\)C, while above 1350\(^\circ\)C aluminium can reduce MgO.

Reason R : The melting and boiling points of magnesium are lower than those of aluminium.

n light of the above statements, choose most appropriate answer from the options given below :