Phallic organs in cockroach are related to

Which of the following structures in a cockroach are made up of chitin?

Choose the correct sequence of the alimentary canal of a cockroach.

Complete the following statement :
$(a)$ In cockroach,grinding of food particles is performed by ........ .
$(b)$ Malpighian tubules help in the removal of ........ .
$(c)$ The hindgut of the cockroach is differentiated into ........ .
$(d)$ In the cockroach,blood vessels open into spaces called ........ .

The given figure shows the digestive system of a cockroach with a few structures marked as $A, B, C$ and $D$. Identify structures $A$ to $D$.

Describe the reproductive system of a cockroach in detail.