Which statements regarding authentication protocols are INCORRECT $($More than one statement applies$)?$a$.$EAP $($EAP$)$ is a self$-$contained authentication protocol.b$.$MS$-$CHAP v$2($Microsoft Challenge Handshake Authentication Protocol version $2)$ is simple to crack and does not provide mutual authentication.c$.$RADIUS $($Remote Authentication Dial$-$In User Service$)$ centralizes AAAA $($Authentication$,$ Authorization, Accounting and Auditing$).$d$.$TACACS$+$ is more secure than RADIUS because TACACS$+$ encrypts the entire package exchanged between client and server whereas RADIUS encrypts only the password.