下面定义函数正确的有（）。
A.def calc ( *numbers ).sum=0 forfor n in numbers. sum=sum+n*n return sum B.dsum=0 fofor n in numbers. sum=sum+n*n return sum. def calc (**numbers). C.def calc (**numbers,n). sum=0 for n in numbers. sum=sum+n*n return sum D.n=0).sum=0 for). sum=0 for n in numbers.sum=sum+sum=sum+n*n re*n return sum. def calc (**numbers,正确答案AB
