Given the following code $($which is the same as in Q$1)$:

public class Person $\{$

private int age;

public Person$()\{$

age $=1$;

$\}$

public int getAge$()\{$

return age;

$\}$

public void getOlderByYears$($int years$)\{$

age $=$ age $+$ years;

years $=$ years $+1$;

$//$ POINT A

$\}$

$\}$

public class Main $\{$

public static void main$($String$[]$ args$)\{$

Person jean $=$ new Person$()$;

int ageAmount $=3$;

$//$POINT B

jean.getOlderByYears$($ageAmount$)$;

$//$POINT C

$\}$

$\}$

Part $1$

When we

run the Java program above, what is the value of years at Point C$?$

$($a$)$ expression does not compile at Point C

$($b$)0$

$($c$)2$

$($d$)4$