下列程序中注释的哪个代码（A，B，C，D）是错误的（无法通过编译）？abstract class A {abstract float getFloat (); //Avoid f() //B{ }}public class B extends A {private float m = 1.0f; //Cprivate float getFloat () //D{ return m;}}
选项：

A:abstract float getFloat (); //A
B: void f() //B
C: private float m = 1.0f; //C
D: private float getFloat () //D