What will be written to the standard output when the following program is run？（）  
class Base {  int i；  Base（） {  
add（1）；  
}  
void add（int v） {  i += v；  }  
void print（） {  System.out.println（i）；  }  
}  
class Extension extends Base {  Extension（） {  add（2）；  }  
void add（int v） {  i += v*2；  }  }  
public class Qd073 {  
public static void main（String args[]） {  bogo（new Extension（））；  }  
static void bogo（Base b） {  b.add（8）；  b.print（）；  
}  
}  

A.The particular event instance.
B.The source of the event.
C.The set of events that were triggered by the same action.
D.The type of event.
E.The type of component from which the event originated.

A.Collection
B.Set
C.SortedSet
D.Map

A.The method waitforId（） in class MediaTracker is called.
B.The run（） method that the thread is executing ends.
C.The call to the start（） method of the Thread object returns.
D.The suspend（） method is called on the Thread object.
E.The wait（） method is called on the Thread object.