Which of the following code used to find the sum of the Right diagonal of two dimensional array.

Select one:

a$.$ if $)=(size-1$ sum $+=a[i][j]+=a[i][j]$;

b$.$ if $($i$+=$a$[$i$][$j$]$;

c$.$ if$($i$==$j$)$ sum $+=a[i][]$;

d$.$ if$($i$>$j$)$ sum$+=$a$[$i$][$j$]$;

Clear my choice