关于下列代码说法正确的是: public interface UnionPay{ double getBalance(); } interface DoMore{ boolean drawMoney(double number); } abstract class ICBC implements UnionPay, DoMore{ } class ICBCImpl implements UnionPay{ public float getRange(int x, int y){ return 3.14f; } } interface DoAII extends DoMore{ float getAvg(int a, int b, int c, int d); }
B.
abstract class ICBC implements UnionPay, DoMore{行,编译错误
C.
interface DoAII extends DoMore{行,编译错误
D.
float getAvg(int a, int b, int c, int d);行,编译错误