i guess the rber drain line is just laying in the
sink in the othr room .. It must be touching the bottom
of the sink??
They dont want waste water to be able to siphon back into the drain
line for the softener...
You need to get it off the bottom of the sink and make it so
the drain pipe is dropping water into the sink from a level above
the flood rim on the top of that sink
usualy if you cut it off and hang it firmly somehow just so it spills
into the sink from above, it will make everyone happy
jsut ask them first what they want so you
dont have to play --- back and forth-- with the inspector