单项选择题

关于语句  #include<iostream>  using namespace std;  void main( )  { cout < < 100.8989663 < < ';     cout < < fixed < < 100.8989663 < <';    cout < < scientific < < 100.8989663 < <';} 的输出结果为

A.100.899 100.898966 1.008990e+002
B.100.8989663 100.898966 1.008990e+002
C.100.899 100.898966 1.008989e+002
D.100.899 100.8989663 1.008989e+002