单项选择题

下面程序的运行结果是( )。
public class Test
public static void main (String args[])
int c=5;
System. out. println (c);
System. out. println (c++);
System. out. println (c);

A.5
6
6
B.5
5
6
C.6
7
7
D.6
6
6