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 Oracle$$s free database system, because its limit is $120$ GB

b$.)$

Upgrade to a paid version, because $10$ GB is the limit for the free version of SQL Server

c$.)$

Switch to Oracle$$s free database system because its limit is $12$ GB

d$.)$

Nothing, because the free version of SQL Server supports databases up to $50$ GB in size and you are nowhere near the limit yet