Question $10(1$ point$)$

$2\mathrm{.}2-04$ Conditional HTTP GET. What is the purpose of the conditional HTTP GET request message?

Question $10$ options:

To allow a server to only send the requested object to the client if the client has never requested that object before.

To allow a server to only send the requested object to the client if the server is not overloaded.

To allow a server to only send the requested object to the client if this object has changed since the server last sent this object to the client.

To allow a server to only send the requested object to the client if the client is authorized to receive that object.