hich code snippet will output $$Yes$!$ when two strings s$1$ and s$2$ are equal?

Question $1$Select one:

a$.$

if $($s$1.$compareTo$($s$2)==1)$

$\{$

System.out.println$("$Yes$!")$;

$\}$

b$.$

if $($s$1=$ s$2)$

$\{$

System.out.println$("$Yes$!")$;

$\}$

c$.$

if $($s$1.$equals$($s$2))$

$\{$

System.out.println$("$Yes$!")$;

$\}$

d$.$

if $($s$1==$ s$2)$

$\{$

System.out.println$("$Yes$!")$;

$\}$