1.public class Test {  2.public static void main （String args[]） {  3.class Foo {  4.public int i = 3；  5.}  6.Object o = （Object） new Foo（）；  7.Foo foo = （Foo）o；  8.System.out.printIn（foo. i）； 9. }  10.}   What is the result？（）  

• A、 Compilation will fail.
• B、 Compilation will succeed and the program will print “3”
• C、 Compilation will succeed but the program will throw a ClassCastException at line 6.
• D、 Compilation will succeed but the program will throw a ClassCastException at line 7.