Which of the Following Compounds Is a Valid Lewis Structure

Which of the following compounds is a valid Lewis structure of a hydrocarbon?

A) All of these compounds are valid structures of hydrocarbons.
B) I, II, and IV are valid structures of hydrocarbons.
C) III and IV are valid structures of hydrocarbons.
D) Only III is a valid structure of hydrocarbons.
E) Only IV is a valid structure of hydrocarbons.