The wool industry is a perfectly competitive industry. From a long run perspective, why is it difficult for a wool producer to make positive economic profits?

Group of answer choices

A.Unions.

B.The assumption of free entry into the wool industry.

C.The assumption that wool producers in the industry do not differentiate their products.

D.The fact that wool producers are price takers.

E.The fact that the demand curve facing each wool producer is perfectly elastic.