What C does /prog/ prefer?

[ ] K&R C
[ ] C89
[ ] C99
[ ] C1x

The only defensible aspect of C99 is the restrict keyword. I don't agree that it should be the programmer's job to micromanage compilers like that (and I'm violently opposed to the inline keyword), but having compilers figure this out automatically is equivalent to solving the halting problem.
Anyone who uses Sepples comments should be shot, by the way.