```bash
$ sh -c 'if ('
sh: -c: line 1: syntax error: unexpected end of file

$ sh -c 'echo $BASH_VERSION'
3.2.48(1)-release

$ sh --version
GNU bash, version 3.2.48(1)-release (x86_64-apple-darwin11)
Copyright (C) 2007 Free Software Foundation, Inc.
```

It's the default bash of Mac OS X Lion