单选题 下列程序的运行结果是______。
class Shape{
public Shape(){
System.out.print("Shape");
}
}
class Circle extends Shape(
public Circle(){
System.out.print("Circle");
}
}
public class Test{
public static void main(String[] args){
Shape d=new Circle();
}
}

• A.Shape
• B.Circle
• C.ShapeCircle
• D.程序有错误