11.5.10.2 : Question about prerequisites for patch 6110945

Hi,
Question about prerequisites for patch 6110945


In order to apply patch 7120551, we need to apply before, as a prerequisite, patch 6110945.
In order to apply patch 6110945, we need to apply before, as a prerequisite, either :

6185777 if current version of EBS is 11.5.10/AP.M (does "/" mean OR or AND ?)
or
6185758 if current version of EBS is 11.5.10.2/AP.O

1) (does "/" mean OR or AND ?)

2) Our environnement is 11.5.10.2 and AP.M (so between above requirements).
For info, all others prerequisites described in patch’s readme (but those above) are OK
It is not possible for us to apply AP.O

In our context, what prerequisite do we need to apply : 6185777 or 6185758 ?