Organic Designs is a​ small, successful chain of stores offering stylish clothes made of​ all-organic materials for​ infants, toddlers, and young children. Most of the Organic Designs stores are located in urban areas. Now Organic Designs is considering using direct marketing to reach potential customers who live outside of the​ company's existing markets. Which of the following methods of direct marketing would likely be most effective in accomplishing this​ goal?

a. direct-mail marketing
b. telephone marketing
c. catalog marketing
d. direct-response television marketing