Limitations in 5G Split Options

Is there anything wrong in the below pic?


I think picture is ok.
You may think that option 3x is not well repesented, but keep in mind that eNodeB also has a S1-U with EPC.

My concern was about option 3a, where there is no X2 shown.

That is limitation of option 3a.
Interview question as well.

But there is X2-C in 3a.
No X2-U.

Yes that’s why option 3x chosen.
With option 3a no option to transmit data through LTE leg.

Right, so in the figure I expected a dotted x2-C for option 3a…