The following statements are about the architecture of the WWW. Which one is incorrect?
A) in the client side a browser program is running, which displays web pages and catches mouse clicks; when an item is selected the browser follows the hyperlink and fetches the selected page
B) the browser is a simple application, which only displays pages; hence, if more complex function is needed (such as playing audio or displaying animations), the browser may use a plug-in or a helper application
C) in order to fetch a requested http:// page, the browser must establish a TCP connection to the web server hosting that page (on port 80); the server looks up a file name on its disk, and if found sends it to the client (the browser) over the connection
D) when the server sends the page, it releases the connection and forgets it has ever seen that particular client, unless cookies are used; cookies have been abused for tracking users without their knowledge, and are truly not necessary for e-commerce applications