$5.(15$ pts$)$ Draw the Instance Data Storage $($IDS$)$ for the class $\backslash ($ A $\backslash )$ and class $\backslash ($ B $\backslash )$

public class A$\backslash \{$

public int a$,$ b;

public void draw$()\backslash \{...\backslash \}$

public int area$()\backslash \{...\backslash \}$

$\backslash \}$

public class $\backslash ($ B $\backslash )$ extends $\backslash ($ A$\backslash \{\backslash )$

public int $\backslash ($ c$,$ d $\backslash )$;

public void draw$()\backslash \{...\backslash \}$

$\backslash \}$

public void sift $()\backslash \{....\backslash \}$