Which of the Following Statements Is True About Customer Relationships

Which of the following statements is true about customer relationships in business markets?

A) A strong impersonal relationship with customers is critical in maintaining one's business.
B) One-on-one personal communication is the most important tool in developing and maintaining customer relationships.
C) An impersonal relationship in B2B markets often connotes a greater emphasis on technology.
D) Customers demand not only an impersonal relationship with their vendors but also an efficient one.
E) Customers prefer direct communication mediums such as e-mail and direct mail for any correspondence.