"An 'advantages and disadvantages' essay consists mostly of several parts: a) an introduction which clearly states the topic without indicating any personal opinion; b) main bodies in which points for and against together with reasons and examples are illustrated separately; c) a conclusion in which a balanced consideration of topic is given or the question is directly and shortly answered (if needed by the task instruction)."

Now this essay can be written in several formats. Three of the following formats are correct, but one is incorrect. Can you choose that wrong one?