ACL $?$A$.$ Whenausertransmitsdatathroughthecontroller,thevaliduserACLisusedtocheckiftheuserisin the layer $3$ user$-$table.B$.$ Beforeaclientisaddedtothecontroller'susertable,thevaliduserACLischeckedtomakesurethe client has a valid IP address.C$.$ The validuser ACL is used during $802\mathrm{.}1$X authentication to check that the client is in the layer $3$ user$-$ table.D$.$ When an AP needs to transmit data to a user $,$ it ckecks the validuser ACL to make sure the user has valid IP Address.What is the purpose of validuser ACL