You can define the compareTo method in a class without implementing the Comparable interface. What are the benefits of implementing the Comparable interface?$$

$$

class B implements A $\{$

$$ void m$1()\{$

$$ System.out.println$("$m$1")$;$$

$\}$

$\}$

Suppose A is an interface. Can you create an instance using new A$()?$

Suppose A is an interface. Can you declare a reference variable x with type A like this?$$

A x;$$

Show the error in the following code:$$

interface A $\{$

$$ void m$1()$;$$

$\}$

$$

class B implements A $\{$

$$ void m$1()\{$

$$ System.out.println$("$m$1")$;$$

$\}$

$\}$