Problem Solving (PS) | Re: Lines m and n are parallel and 12 inches apart. Two distinct lines p

All four lines are parallel.
Two distinct lines p and q are parallel to m, and are each twice as far from m as from n.
One of the distinct lines is between m and n: its distance to m is 8, and its distance to n is 4.
The other is outside the range between m and n: it is closer to n at the distance of 12. (therefore, its distance to m is 24)

The distance between p and q is 4+12=16
The answer is thus(C).