Answer:
B) AB is parallel to CD, but AD is not parallel to BC.
Step-by-step explanation:
The options are:
A) AD is parallel to BC, but AB is not parallel to CD.
B) AB is parallel to CD, but AD is not parallel to BC.
C) AB is parallel to CD, and AD is parallel to BC.
D) AD is not parallel to BC, and AB is not parallel to CD.
AB and CD have the same slope, so they are parallel.
BC and AD have different slopes, so they are not parallel.
Therefore, the answer is B.