Identify the correct statements from those given below:
i) The central nervous system consists of the brain and the spinal cord.
ii) The peripheral nervous system consists of 31 pairs of cranial nerves and 12 pairs of spinal nerves.
iii) The sympathetic system and the parasympathetic system are parts of the central nervous system.
iv) The autonomous nervous system which is a part of the peripheral nervous system helps to overcome the emergency situations.
