类Test定义如下，将下列哪个方法插入③行处是不合法的 ( ) ①public class Test { ②public float Method(float a，float b){} ③ ④}

A．public float Method(float a，float b，float {}

B．public float Method(float c，float {}

C．public int Method(int a，int {}

D．private float Method(int a，int b，int {}