单项选择题
A.<head> <script href="http://cdn.static.runoob.com/libs/jquery/1.10.2/jquery.min.js"> </script></head>
B.<head> <script src="http://cdn.static.runoob.com/libs/jquery/1.10.2/jquery.min.js"> </script></head>
C.<head> <link src="http://cdn.static.runoob.com/libs/jquery/1.10.2/jquery.min.js"> </link></head>
D.<head> <a src="http://cdn.static.runoob.com/libs/jquery/1.10.2/jquery.min.js"> </a></head>