The correct options are
A Instrument of Accession
B Attachment Bond
C Status quo agreement
There were around 562 Princely states of varying sizes who remained uncertain after British rule. They had the choice to join either India or Pakistan or to remain independent. Sardar Vallabhbhai Patel came up with ideas like the 'Instrument of Accession', ‘Attachment bond’, and ‘Status quo agreement’ to unite princely states with India.