In Which of the Following Situations Would Use of the Competitive

In which of the following situations would use of the competitive parity budget-setting method be most appropriate?

A) Two or more companies are competing with similar products and similar promotional goals.
B) Two or more companies are introducing a totally new product to the market.
C) Two or more companies exist in an oligopoly, and are planning on a product diversification strategy.
D) Two or more companies exist in pure competition and compete on the basis of product differentiation.