Service providers often face price competition. As a solution to​ this, service providers can further differentiate themselves based on which three​ characteristics?
A. Delivery, image, and discounting
B. The service​ offer, delivery, and intangibility
C. The service​ offer, image, and intangibility
D. The service​ offer, delivery, and image
E. Intangibility, perishability, and variability