Which of the following method signatures is a valid declaration of an entry point in a Java application? A. public void main(String[] args) B. public static void main() C. private static void start (String[] mydata) D. public static final void main(String[] mydata) The following class diagram demonstrates the relationship between Gold and silver, which extend the Metal class. Assume the attributes are all declared public. Which statement about the diagram is not true? Gold + hue Metal + weight + color Silver + luster A. The diagram demonstrates platform independence in Java. B. The diagram demonstrates object-oriented design in Java. C. The Gold and silver classes inherit weight and color attributes from the Metal class. D. Gold does not inherit the luster attribute.