Which of the Following Makes It Necessary for Salespeople to Conduct

Which of the following makes it necessary for salespeople to conduct a thorough and continued follow-up with the clients?

A) Conducting post-sales follow-up gives rise to cognitive dissonance.
B) In present times, customers are more loyal toward brands and vendors now than before.
C) Most businesses depend on repeat sales, which depend on follow-up by the salesperson.
D) Buyers are more inclined to look for the best deal when they experience good post-sale follow-up.