What is true about using static routes from the PE to the CE router?

What is true about using static routes from the PE to the CE router?

A.
Can be used where there is only one connection from the customer to the provider network.

B.
They do not need to be redistributed into MP-BGP.

C.
The CE router can use a default route to the PE.

D.
They simplify the management of VPN’s by the service provider.