Which of the following policies CANNOT be implemented on the ProxyAV? (Choose all that apply) (a) Blocking viruses, worm

[answerhappygod]

Which of the following policies CANNOT be implemented on the ProxyAV? (Choose all that apply)
(a) Blocking viruses, worms, spyware and trojans
(b) Blocking file types using apparent data type (file signature)
(c) Blocking files that exceed a size limit set by the administrator
(d) Blocking password protected archive files

A. a only
B. b only
C. c only
D. d only
E. All of the above can be implemented with the Proxy AV