单项选择题
Originally introduced by Netscape Communications, ______ area general mechanism which HTTP Server side applications, such as CGI ______, can use both store and retrieve information on the HTTP ______ side of the connection. Basically, Cookies can be used to compensate for the ______ nature of HTTP. The addition of a simple, persistent, client-side state significantly extends the capabilities of WWW-Joased ______.
A.programs
B.applications
C.flameworks
D.constrains