Fill in the most appropriate code in the blanks in the MyInt class?

public class MyInt implements $\_\_\_\_\_\_\_\{$

int id;

public MyInt$($int id$)\{$

this.id $=$ id;

$\}$

public String toString$()\{$

return String.valueOf$($id$)$;

$\}$

public int compareTo$(\_\_\_\_\_\_\_$ arg$0)\{$

if $($id $>$ arg$0.$id$)$

return $1$;

else if $($id $<$ arg$0.$id$)$

return $-1$;

else

return $0$;

$\}$

$\}$

a$.$

Comparable $/$ MyInt

b$.$

Comparable $/$ Object

c$.$

Comparable $/$ MyInt

d$.$

Comparable $/$ Object