输入字符'C'时，下列C++字母分组代码的输出组号是？
char c;
while(1) {
cin >> c;
if(c=='q') break;
switch(c) {
case 'A': cout << "1 "; break;
case 'B': cout << "3 ";
case 'C': cout << "3 ";
case 'D': cout << "5 "; break;
case 'E': cout << "5 "; break;
default: cout << "9 ";
}
cout << endl;
}
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