Which one of the following is the correct description of a certain part of a normal human skeleton?
A. The parietal bone and the temporal bone of the skull are joined by fibrous joint
B. The glenoid cavity is a depression to which the thigh bone articulates
C. The first vertebra is the axis that articulates with the occipital condyles
D. The 9th and 10th pairs of ribs are called the floating ribs
