NEET 2020 Biology question

If the head of cockroach is removed, it may live for few days because :

• (A)the supra-oesophageal ganglia of the cockroach are situated in ventral part of abdomen.
• (B)the cockroach does not have nervous system.
• (C)the head holds a small proportion of a nervous system while the rest is situated along the ventral part of its body.Correct
• (D)the head holds a 1/3rd of a nervous system while the rest is situated along the dorsal part of its body.