Martha, an experienced employee at a leading home appliances company, goes out of her way to interact with her customers. She takes extra care in understanding her customers' requirements and resolving their issues. She discusses in detail the appliances and their features with each customer and also helps them plan their finances. She keeps in touch with her existing customers and also frequently contacts her potential customers to maintain relations with them. Which of the following types of employees is Martha most likely to be$?$

Multiple Choice