Consider the following half cell reactions :
`{:(Mn^(2+) + 2e^(-) to Mn " " E^(0) = - 1.18V),(" "Mn^(2+) to Mn^(3+) + e^(-) " "E^(0) = - 1.51 V):}`
The `E^(0) ` for the reaction `3Mn^(2+) to Mn + 2Mn^(3+)`, and the possiblility of the forward reaction are respectively.

Options

A. `2.69 V` and spontaneous
B. `-2.69` and non spontaneous
C. `0.33 V` and Spontaneous
D. `4.18V` and non spontaneous

Answer

B