QID- NF57 Which 2 statements are true about BGP.....

[contiva]

hi, whats with Q NF57, answers keep changing...

TCP is used for reliability is fine
but
if I select "BGP will never send a message unless it is triggered" then its marked incorrect.
answer given is BGP is a path vector protocol

Now if I select BGP is a path vector protocol  then its marked incorrect.
then given answer is "BGP will never send a message unless it is triggered"

Ive never heard of a path vector protocol  ;D

Admins - whats up with the exam?