类A及其派生类B定义如下:class A{ public int getIno(int a) { return a; }}public class B extends A{ public loat getIno(int b) { return b; } public static void main(String[]args) { A a=new A(); B b=new B(); System.out.println(a.getIno(3)+','+b.getIno(5)); }}关于上述程序代码的叙述中正确的是 ( )