Stan Works for a Garment Machinery Manufacturing Company

Stan works for a garment machinery manufacturing company. He usually makes sales calls with the distributor's salespeople to aid them in selling and help any of the distributor's customers. This is an example of a territory manager salesperson:

A) helping customers resell products.
B) tracking customer complaints.
C) modifying product usage.
D) providing service to customers.
E) redesigning product distribution.