Which of the Following Is a Primary Difference Between Price

Which of the following is a primary difference between price searchers and price takers?

A) Price searchers maximize profits, but price takers do not.
B) Price searchers have to cut their price to sell additional output, but price takers do not.
C) The market demand for goods produced by price searchers is downward sloping, while the market demand for goods produced by price takers is horizontal.
D) Profit-maximizing price searchers will expand output to the quantity where marginal revenue equals marginal cost, but price takers will not.