Which two statements are correct concerning DHCP Internal Server and DHCP External Server in the E-series router?

Which two statements are correct concerning DHCP Internal Server and DHCP External Server in the
E-series router? (Choose two.)

A.
They provide dynamic IP addresses for DSIs.

B.
They provide dynamic IP addresses for SRC applications.

C.
They provide dynamic IP addresses from pools for PPPoE subscribers.

D.
They provide dynamic IP addresses from pools for Routed IP subscribers.