Michael Porter has identified five forces that determine the intrinsic long-term attractiveness of a market. According to the model. which of the following are true?

(A) A segment is unattractive if it already contains numerous aggressive competitors.

(B) A segment is unattractive if it is stable or declining.

(C) A segment is unattractive if it has high entry barriers and low exit barriers.

(D) A segment is unattractive if the company's suppliers are able to raise prices.

(E) A segment is unattractive when there are actual or potent substitutes for the product.

Choose the most appropriate answer from the options given below: