How do you name benzene rings?
It's hard to tell what you mean. You might mean one of the following:
To name A, it is a phenyl substituent.
To name B, it is a benzyl substituent.
C is called an n-acene. So, if there are four benzene rings in a row, it's called tetracene. If it's seven, then it's called heptacene, and so on.
D is a special type of compound called a periacene. This one is named based on the "armchairs" and "zigzags" it has. For this one, it's called (5a, 3z)-periacene since it has five rows of benzene rings, each having an armchair (