TS EAMCET Medical 2018 May 3 Shift 1Paper

Gibbs free energy change for the formation of Al2O3 and MgO at 25°C are approximately -1040 and -1080 kJ mol−1 respectively.
Which of the following statements) is (are) collect for the above data?
a) The reduction of MgO by Al is thermodynamically feasible at 25°C
b) The reduction of Al2O3 by Mg is thermodynamically feasible at 25°C
c) Aluminium can be extracted from Al2O3by mixing it with Mg at 25°C. but it is slow
d) Magnesium may be extracted from MgO by mixing it with Al at 25°C