I thought it had to come from handstand or something for that. Isn't it a C from a horizontal cast? Maybe I'm confused, or I just don't think a cast horizontal shootover HS should be restricted when straddle back HS is allowed is more like it lol. Never learned a shootover (failed at the early drills, went to paks) so I'm not that up on them.
A bail that starts and ends in a handstand is a D. If you start below HS and end in a HS (or conversely start in a HS and end lower than a HS), then I believe it's a C. I don't have my judging materials in Germany, though, so I could be wrong.