What are three drawbacks of a peer-to-peer VPN using a shared provider edge (PE) router?
(Choose three)

A.
A full mesh of virtual circuits is required between the customer sites.

B.
All the customers have to share a common IP address space.

C.
Optimal routing between customer sites cannot be guaranteed.

D.
The shared PE router has to know all routes for all customers.

E.
Packet filters are required on the PE routers.