The following statements are correct, except "A basic principle of relationship marketing is that firms should concentrate on producing and promoting products that appeal to large groups of people" Option A
Generally, As essential elements of relationship marketing, individualization of service, knowledge about the customer, investment in the customer, interaction with the customer, integration of the customer, intention, and selectivity have also been recognized.
The following assertions are true, with one exception: "A fundamental tenet of relationship marketing is that businesses need to focus their efforts on generating and advertising items that appeal to broad groups of people." Alternative A
Read more about the principle of relationship marketing
https://brainly.com/question/29332604
#SPJ1