R-2.11 Consider the following code fragment, taken from some package: public class Maryland extends State { Maryland() { /* null constructor */ } public void printMe() { System.out.println("Read it."); } public static void main(String[] args) { Region east = new State(); State md = new Maryland(); Object obj = new Place(); Place usa = new Region(); md.printMe(): east.printMe(); (Place) obj).printMe(); obj = md; (Maryland) obj).printMe(); obj = usa; ((Place) obj).printMe(); md; (Place) usa).printMe(); } class State extends Region { State() { /* null constructor */ } public void printMe() { System.out.println("Ship it."); } } class Region extends Place { Region() { /* null constructor */ } public void printMe() { System.out.println("Box it."); } } class Place extends Object { Place() { /* null constructor */ } public void printMe() { System.out.println("Buy it."); } } What is the output from calling the main() method of the Maryland class? usa =