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