'clr Enabled' Does Not Exist

I execute the following:

-- Turn on advanced options

sp_configure 'show advanced options', 1;

GO

RECONFIGURE;

GO

-- turn on clr

sp_configure 'clr enabled', 1

GO

RECONFIGURE;

GO

and get this error:

Msg 15123, Level 16, State 1, Procedure sp_configure, Line 78

The configuration option 'clr enabled' does not exist, or it may be an advanced option.




When I run surface area config, I select Configuration for Features, but under MSSQLSERVER, I do not see the entry for Database Engine that should have the CLR Integration under it.

Any suggestions? Thanks in advance.