[单选题] SQL注入是一种常见且危害很大的攻击方式,以下的攻击属于SQL注入的是?( ) A. http://www.example.com/news.php?id=1=1 B. http://www.example.com/news.php?id=1%3cscript%3econfirm(%27hello%2cworld!%27)% 3c%2 C. http://www.example.com/news.php?id=1&&net user admin admin /add D. http://www.example.com/news.php?id=1’ or ‘1’=’1