What are the two options for the remote sites connecting into the SAFE SMR medium design? (Choose two)

A.
ATM Connection only.

B.
IPSec VPN into the corporate Internet module.

C.
ISDN

D.
Frame Relay Connection only.

E.
Private WAN connection using the WAN module.

Explanation:
From a WAN perspective, there are two options for the remote sites connecting into the medium design. The first is a private WAN connection using the WAN module;the second is an IPSec VPN into corporate internet module.? REF;Safe white papers;page 16
SAFE: Extending the Security Blueprint to Small, Midsize, and Remote-User Networks