In human body, which one of the following is anatomically correct?

Humans have 12 pairs of ribs: 7 pairs of true ribs, 3 pairs of false (vertebrochondral) ribs and 2 pairs of floating ribs.
The floating ribs are the 11th and 12th pairs, which are not attached to the sternum ventrally. So floating ribs - 2 pairs is correct.
The collar bones (clavicles) are 1 pair, not 3 pairs.
The salivary glands are 3 pairs (parotid, sub-maxillary or sub-mandibular, and sub-lingual), not 1 pair.
The cranial nerves in humans are 12 pairs, not 10 pairs.
So the anatomically correct statement is floating ribs - 2 pairs.