Which of the Following Presents the Strongest Reason That Mark-Up

Multiple Choice

Which of the following presents the strongest reason that mark-up pricing generally does NOT make sense?

A) Sellers earn a fair return on their investment.
B) By tying the price to cost,sellers simplify pricing.
C) When all firms in the industry use this pricing method,prices tend to be similar.
D) This method ignores demand.
E) With a standard mark-up,consumers know when they are being overcharged.