Hi Hari,
There is no scenario C3, but the there are also these, in addition to the ones described by Aman:
O3:- SPL off-line screening of independent addresses.
S3:- SPL off-line screening of independend addresses, but in simulation mode.
But to answer your question; you don't really have to be aware of the "scenario". It is taken care of automatically by your use of the relevant Transaction.
Regards,
Dave