Given the following code, write a line of code that, when inserted at the indicated location, will make the overriding method in Extension invoke the overridden method in class Base on the current object.  
	class Base {  
	public void print() {  
	System.out.println("base");  
	}  
	}  
	class Extention extends Base {  
	public void print() {  
	System.out.println("extension");  
	// insert line of implementation here  
	}  
	} 
	 public class Q294d {  
	public static void main(String args[]) {  
	Extention ext = new Extention();  
	ext.print();  
	}  
	}  
	Fill in a single line of implementation.()