What happens when you try to start an instance and connect to the database?

A control file has been accidentally deleted. What happens when you try to start an instance and connect to the database?

A.
The database opens using another control file automatically.

B.
An error message is displayed and the database is not mounted.

C.
The database mounts but an error message appears stating that the database cannot be opened.

D.
The Oracle instance requests for the location of another control file, and then the database mounts and opens using the other control file.