Answer:
Your answer of coplanar is correct
Explanation:
A skew line are 2 lines that aren't parallel and do not intersect.
Since there are arrows on either end of AC and RS , it mean those lines continue, and they will eventually intersect.
It is also not the other 2 clearly, since they do intersect and they don't make a 90° angle
So yes,
The answer is Coplanar
Hope this helps.