Some statement about Ellingham diagram
(a) Increase in the slope of the line on +ve side indicates the phase ransformation
(b) Metal oxide decomposes on its own at the temperature when the `DeltaG^(0)` becomes positive
(c ) Oxide of the upper line can reduced by the elements whose oxidation is represented by the lower line. The correct statement is/are

Options

A. Only a
B. Only a and b
C. Only b and c
D. a,b and c

Answer

D