多选题 Given:
4. class Account {Long acctNum, password; }
5. public class Banker {
6. public static void main(String[] args) {
7. new Banker() .go();
8. // do more stuff
9. }
10. void go() {
11. Account a1 = new Account();
12. al.acctNum = new Long("1024");
13. Account a2 = a1;
14. Account a3 = a2;
15. a3.password = a1.acctNum.longValue();
16. a2.password = 4455L;
17. } }
When line 8 is reached, which are true? (Choose all that apply.)