Which Statements Regarding BGP Well-Known Mandatory Attributes Are True? (Select

Which statements regarding BGP well-known mandatory attributes are true? (Select 3 answers)

A) Well-known mandatory attributes must be recognized by all BGP routers.
B) Well-known mandatory attributes impacts the path decision process.
C) Well-known mandatory attributes are optional in an Update packet, and can be included in an Update packet as needed.
D) Well-known mandatory attributes must be included in all Update packets.