Two Square objects are compared for equality based on the length of their side. The equals$()$ method in Square class is defined as follows:

boolean equals $($Object o $)\{$ if $($o $==$ null $)$ return false; if $($this $==$ null $)$ return true; if $(!($o instanceof Square$))$ return false; Square s $=($Square$)$ o; if $($this$.$side $==$ s$.$side $)$ return true; return false; $\}$

Assume the following declarations are made. The one argument constructor sets the length of the side for a Square object.

Square s$1=$ new Square$(5)$; Square s$2=$ new Square$(5)$; Square s$3=$ new Square$(10)$;

Select all the expressions below that evaluate to true.