Sandy Tappan Owns an Automobile Detailing Business Called Sizzlin' Shine

Sandy Tappan owns an automobile detailing business called Sizzlin' Shine.Her goal is to outperform other auto shops by specializing in detailing services.Her shop doesn't do any mechanical or collision repair work.Tappan prices her detailing service higher than her competition because she uses only the best materials,and they cost more than the materials used by her competitors.Her goal is to maximize profits.
-Refer to Sizzlin' Shine.Tappan has just initiated a frequent-shine card for customers who purchase her shop's services at least once a quarter.After four complete details,the customer receives the next detailing service free.How do frequency programs like this one implement relationship marketing?

A) by using financial bonds
B) by using social bonds
C) by using personal communications
D) by using homogeneous service