How did the skull die according to the fable Zhuangzi and the Skull?
A.
Some insatiable ambition or disgraceful behavior have brought the skull to death
B.
The skull’s country had been conquered and he had been killed by his enemies.
C.
He committed suicide because he did something evil that disgraced his family
D.
How he died remained a mystery but he is happy with his life as a dead man