单项选择题
A.http：//www.example.com/news.php？id=1’or ’1’=’1
B.http：//www.example.com/news.php？id=1&net user admin admin /add
C.http：//www.example.com/news.php？id=1%3cscript%3econfirm（%27hello%2cworld!%27）%3c%2fscript%3e
D.http：//www.example.com/news.php？id=1=1