Which statement about authorization and the PIX Firewall is true?

Which statement about authorization and the PIX Firewall is true?

A.
The PIX Firewall does not support TACACS+ authorization.

B.
The PIX Firewall supports downloadable ACLs using RADIUS.

C.
The PIX Firewall does not support per-user authorization.

D.
The PIX Firewall supports downloadable ACLs using TACACS+.