How does an unmyelinated axon differ from a myelinated axon?

In the diagram of a multipolar myelinated neuron given below,different parts have been indicated by alphabets. Choose the option in which these alphabets have been correctly matched with the parts they indicate.

Which one of the following pairs of structures distinguishes a nerve cell from other types of cells?

The nerve cells do not possess

Neuroglia are

Nissl's granules are present in which part of a neuron?