Which of the Following Statements Regarding Control Are True

Which of the following statements regarding control are true?

A) For node 10, the relationship between if-match community-filter 1 and if-match as-path-filter 1 is "AND."
B) Default OSPF, IS-IS, and BGP routes can be advertised.
C) An AS-Path-filter filters routes based on the AS-Path attribute to affect route selection
D) The import-route BGP command can be used to import IBGP routes