Question About Hollowback Press

So I was going through the elements in F1 and seeing what they are in the code of points.

 

Front Lever: A 

Straddle Planche: A

Side Lever: N/A

Manna: C

Rope Climb: N/A

Single Leg Squat: N/A

 

Then I got to the hollowback press. Does anyone know what it is in the code of points?

 

P.S If any of the above mentioned points were incorrect, please inform me. 

It's a 'B' on rings. 

Well, although it's a B on rings, I wouldn't say that fits to the element you're developing with F1. The one on the rings is lacking a negative and also doesn't start in a bent arm planche but in support so that you only move through the bent arm planche. That's why I would say that the element which is a B in the code is easier than the hollowback press in F1.