Which of the following season is associated with the concept of “Retreating Monsoon” ?

The south-west monsoon withdraws from northern India during October and November. This period of the retreating monsoon is the post-monsoon or autumn season, marked by clear skies and the "October heat".

It is also when the Coromandel coast gets much of its rain from the north-east winds. Summer is the pre-monsoon hot season, and winter follows the retreat.