20 points! What are two ways in which the cave paintings in the Chauvet-Pont-d'Arc Cave are especially important?
A. They depict formerly unknown animals and are well-preserved due to a landslide that had covered the entrance.
B. They are the oldest known cave paintings and are also remarkably well-preserved.
C. They were just recently discovered and they are unusually well-executed for the abilities of that time.