In the context of the dimensions of the business environment, which of the following is true of the competitive environment?
a. Vocal promoters of a firm's products can get the firm new customers effectively.
b. Unlike current customers, potential customers can be turned into loyal advocates.
c. Convincing potential customers to try one's products for the first time can be quite easy for a firm.
d. Getting current customers to buy more of one's products is very expensive for a firm.