问题：

[单选]

package foo； 
public class Outer { 
public static class Inner { 
} 
}  
Which statement is true？（） 

A .  Compilation fails.
B .  An instance of the Inner class can be constructed with “new Outer.Inner（）”.
C .  An instance of the Inner class cannot be constructed outside of package foo.
D .  An instance of the Inner class can be constructed only from within the Outer class.
E .  From within the package foo， and instance of the Inner class can be constructed with “new Inner（）”.