下面程序的输出结果是( )。
Public class Sun
public static void main(String args[ ])
int i = 9;
switch (i)
default:
System.out.println("default");
case 0:
System.out.println("zero");
break;
case 1:
System.out.println("one");
case 2:
System.out.println("two");
A.default
B.defauolt, zero
C.error default clause not defined
D.no output displayed