Q.Choose the odd one out :

Large-scale retailers are organised retail businesses operating on a scale of capital, stock, and management well beyond an individual small shop. Departmental stores sell a very wide variety of goods through separate departments under one roof; chain stores are a number of standardised outlets in different localities under single central ownership; mail-order businesses (and their modern online-retailing descendants) sell to customers who never visit a physical shop, using a catalogue or website and delivery by post/courier; consumer co-operative stores are owned and run by the consumers themselv …