Critical Reasoning

Please explain the question in a detailed way and logic behind it..

Nearly one in three subscribers to Financial Forecaster is a millionaire, and over half are in top management. Shouldn't you subscribe to Financial Forecaster now?
A reader who is neither a millionaire nor in top management would be most likely to act in accordance with the advertisement's suggestion if he or she drew which of the following questionable conclusions invited by the advertisement?

(A) Among'finance-related periodicals. Financial Forecaster provides the most detailed financial information.
(B) Top managers cannot do their jobs properly without reading Financial Forecaster.
(C) The advertisement is placed where those who will be likely to read it are millionaires.
(D) The subscribers mentioned were helped to become millionaires or join top management by reading Financial Forecaster.
(E) Only those who will in fact become millionaires, or at least top managers, will read the advertisement.

Please explain the question in a detailed way and logic behind it.