Which three statements are true?（）
A final method in class X can be abstract if and only if X is abstract.
B. A protected method in class X can be overridden by any subclass of
C. A private static method can be called only within other static methods in class
D. A non-static public final method in class X can be overridden in any subclass of
E. A public static method in class X can be called by a subclass of X without explicitly referencing the class
F. A method with the same signature as a private final method in class X can be implemented in a subclass of
G. A protected method in class X can be overridden by a subclass of X only if the subclass is in the same package as
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