Which is true on the subarachnoid space in the vertebral canal（）。
- Alies between dura matter and arachnoid
- Bup to subarachnoid space in the skull by the foramen magnum
- Cdown the the height of the fifth sacral vertebral
- Dterminal cistern is formed by the space below the second sacral vertebral
- Ethe fluid in it can communicate with that in the center canal of spinal cord directly