The correct options are
B Sanghams were village level branches set up by the Andhra Maha Sabha.
C Sanghams successfully abolished vetti, eviction of tenants in villages where 'People's court' was set up.
Sanghams were village branches set up by the Andhra Maha Sabha to protect people being exploited by Zamindar, Doras etc. They set up 'people's court' to abolish vetti, eviction of people and were successful.