下面代码的运行结果是 public class Car { public void run(){ System.out.println("汽车在跑"); }} public class Benz extends Car { public void run(){ System.out.println("奔驰在跑"); }} public static void main(String[] args) { Car car = new Benz() ; car. run();}
选项：

A:汽车在跑
B:奔驰在跑
C:无法编译
D:运行时将抛出异常