Answer: A.
and
are parallel.
C.
and
lie on the same plane.
E.
and
do not intersect.
Step-by-step explanation:
Given expression : 
We know that '||' is the sign we use to show parallel lines.
It means
and
are parallel.
Also, parallel lines lie on the same plane.
So ,
and
lie on the same plane.
It is known that the parallel lines are the lines which never intersect each other.
So
and
do not intersect.
Also, skew lines are lines which are not parallel.
But
and
are parallel.
So,
and
aare not skew.