Consider the following:

ClO$4-1+4$ Mn$2++4$ H$2$O $--->$ Cl$-1+8$ H$+1+4$ MnO$2$

The forward reaction is:

Select one:

a$.$

spontaneous and the E$\backslash$deg is $+0\mathrm{.}17$ V

b$.$

spontaneous and the E$\backslash$deg is $-0\mathrm{.}17$ V

c$.$

non$-$spontaneous and the E$\backslash$deg is $+0\mathrm{.}17$ V

d$.$

non$-$spontaneous and the E$\backslash$deg is $-0\mathrm{.}17$ V