I know you are LOL.........
Answer:
A. customer relationship management.
Explanation:
Based on the scenario being described within the question it can be said that in this scenario, Five Elements Spa is using customer relationship management. This refers to an approach of managing a companies various interactions between the company and it's current and future potential customers , with the main goal of retaining the current customers and bringing in newer potential customers. Which is what the company is doing by regularly keeping in touch with their customers.
It all depends on the subject(s) that you will teach and at what level you will teach.
D. all of the above are good questions.
