2014 Ducati Supersport - C Supersport Rules

I've been out of racing for a few years and looking to get back at it. I found a Ducati 899 that I like and want to know the legalities of racing it in the C supersport class. I read the rules and it states that it can be a 850CC liquid cooled twin. Maybe I'm missing something here but I thought these raced in the 600 class. Any help would be appreciated.

 

The 848's raced in C classes. The 899 and 959 were ran in the B classes.

 

But what if he's slow?

 

Then he’d be riding a honduh?

 

Boom, roasted.