Which of the following structures is the functional unit in a Golgi complex?

The endoplasmic reticulum is in continuation with:

The main organelle involved in the modification and routing of newly synthesized proteins to their destinations is:

Golgi body originated from

Dictyosomes are

Identify the components labelled as $A$,$B$,$C$,and $D$ in the diagram given below from the list $(i)$ to $(viii)$.
$(i)$ Cristae of mitochondria $(ii)$ Inner membrane of mitochondria $(iii)$ Cytoplasm $(iv)$ Smooth endoplasmic reticulum $(v)$ Rough endoplasmic reticulum $(vi)$ Mitochondrial matrix $(vii)$ Ribosome $(viii)$ Nucleus