[单项选择题] 执行下列程序之后，变量n的值为( )。public class Exam{public static void main (String[] args){ int y=2;

[单项选择题] 执行下列程序之后，变量n的值为( )。public class Exam{public static void main (String[] args){ int y=2; int z=3; int n=4; n=n+-y*z/n; System. out. println(n); }}

A．3

B．-1

C．-12

D．-3