Do Heavier Hydrocarbons Tend to Produce More or Less Carbon

Do heavier hydrocarbons tend to produce more or less carbon dioxide upon combustion compared to lighter hydrocarbons? Why?

A) Heavier hydrocarbons produce less carbon dioxide because by percentage there is less carbon in their molecular structure.
B) Heavier hydrocarbons produce more carbon dioxide because they have a greater proportion of carbon in their molecular structure.
C) Heavier hydrocarbons produce less carbon dioxide because they tend to produce both carbon monoxide and carbon trioxide in addition to carbon dioxide when they combust.
D) Heavier hydrocarbons produce the same amount carbon dioxide as lighter hydrocarbons because complete combustion always results in the same two compounds, and .