If a dbms enforces a delete set-to-default option on the referential integrity constraint between client and agent in the happy insurance database, what will be the outcome after a user tries to delete the last record (a4, james, 3, 90, 2010, a3) from agent? a) client will have 7 records, agent will have 4 recordsb) client will have 6 records, agent will have 3 recordsc) client will have 7 records, agent will have 3 recordsd) client will have 6 records, agent will have 4 records