单项选择题

以下程序段的输出结果为 ( )
int j=2;
switch(j)
case 2:
System.out.print("two.");
case 2+1:
System.out.println("three.");
break
default:
System.out.println("value is"+j);
break;

A) two.three.
B) two.
C) three.
D) value is 2