Which function$($s$)$ in the following class interface should include error checking for validity$/$consistency$?$

class Student

$\{$

public:

Student$($int an$\_$id$)$;

int set$\_$id$($int id$)$;

string get$\_$id$()$ const;

string get$\_$name$()$ const;

void set$\_$name$($string new$\_$name$)$;

private:

string name;

int id;

$\}$;

Question $7$ options:

Student

get$\_$id

get$\_$name

All of these