I apologize in advance if this is a dumb question. I'm looking for ANA First availability in Dec using UA miles. I've booked this flight before so I know it's doable. But when I search using the award functionality, I'm seeing only three columns on united.com: Economy | Premium Economy | Business. Even though I chose "First" in the Advanced Search, it seems that column no longer exists?

Is this an error on my side? A misunderstanding (maybe they've combined Biz & First and I didn't know)? Just an indication that no award space is available? Something else?

Thanks!