Adding a utility sink to garage

[JTAFVet]

Hello. I would like to add a utility sink in my garage but I am not sure how to properly connect the drain so it will drain correctly and meet code. The sink will be installed against a wall where on the other side of the wall is the master bathroom. Please see image to see my current setup and not so good drawings with options I thought.
I would appreciate if someone could please let me know if any of these would work and be code compliant in San Antonio, TX. Thank you in advance!

 

[MicEd69]

I believe you are under the IPC code, so what's shown below MAY be applicable.


This shows a washing machine standpipe, but the inspector MAY deem that this design is applicable to your water softener drain.

If not, tying your utility sink into the horizontal drain from you master bathroom sink would work. But a better design would be to stack another Sanitary tee on top of the existing one draining your master bathroom sink and drain the utility sink into that one.