abstract class A

protected int getval $()$ f return this, getval$()$; $\}$

protected abstract int getvalue$()$;

$\}$

class B extends A f

protected int getval $()($return $4$; $)$

publio int getvalue$()($

return this.getval$()+$ super.getval$()$;

$$

$$

class $C$ extends $B($

public int getval$()\{$return $8$; $\}$

public int getvalue$()($

return this.getval $()+$ super.getvalue $()$;

$$

$$

There is an object c of class C from the shown Java source code. What is the result of $$ c$.$getValue$()?$

$16$

none $$ Stack overflow error

$20$

$24$