In refinement of V-Model, assume it it a combination of \ 
and /.
All the activities(information gathering, analysis, design) 
in \ are QA related activities. Whic mainly concentrates on 
process.
The other side of V, i.e / in this all the QC related 
activites(Unit testing, component testin, integration 
testing, system testing and user acceptance testing) will 
be done.
So my answer is \ is for QA and / for QC.

But the activities of QA will effect the total life cycle
(means until Acceptance testing).