Which part of Cockroach has both exoskeleton and endoskeleton

The correct option is A Head
The head of the cockroach has both the endoskeleton and exoskeleton. The cuticle enters into the coelom and forms the endoskeleton and in the head, it is known as tentorium. The exoskeleton is also present in the head of the cockroach and there is known as apodeme.

So the correct answer is 'Head'.