11.class Snoochy{
12.Boochybooch；
13.public Snoochy（）{booch=newBoochy（this）；}
14.}
15.
16.class Boochy{
17.Snoochy snooch；
18.public Boochy（Snoochys）{snooch=s；}
19.}
And the statements：
21.public static void main（String[]args）{
22.Snoochy snoog=new Snoochy（）；
23.snoog=null；
24.//more code here
25.}
Which statement is true about the objects referenced by snoog，snooch，and booch immediately after line 23 executes？（）