What will be the result of the following comparison using the CompareTo$()$ method?

string name$1=$ "John";

string name$2=$ "johnn";

int result $=$ name$1.$CompareTo$($name$2)$;

Console.WriteLine$($result$.$ToString$())$;

a$.$

$0$

b$.$

$1$

c$.$

$-1$

d$.$

Error message