![enter image description here][1]

I am having a big question regarding Poison reverse concept .


Here from the picture The Link between A and T is broken .

Now A sends a Triggered update to B and E immediately , and B , E sends the route back to the A .


Here is the question , B and E will send the poison route only to A or they will send the entire database  and how will be the communication between E ,D and B,C ?


    If the Router C sends an update to B with metric 4 then B accepts it ?


  [1]: https://i.sstatic.net/rmssi.png