Suppose you are using the Express $($free$)$ version of Microsoft SQL Server, and your database is $9$ GB in size. What should you do$?$a$.)$Switch to Oracles free database system because its limit is $12$ GBb$.)$Switch to Oracles free database system, because its limit is $120$ GBc$.)$Upgrade to a paid version, because $10$ GB is the limit for the free version of SQL Serverd.$)$Nothing$,$ because the free version of SQL Server supports databases up to $50$ GB in size and you are nowhere near the limit yet