Alduro Asia Chemicals,a Manufacturer of Detergents,delivers Chemicals Used for Commercial

Alduro Asia Chemicals,a manufacturer of detergents,delivers chemicals used for commercial washing to various hoteliers in Asia.Most of the company's revenue comes from routine orders from its existing customers and the company uses unskilled salespeople to collect requirements from its customers.These unskilled customers are known as ________.

A) demand creators
B) deliverers
C) missionaries
D) order takers
E) solution vendors