1. Using the correct relative value of the Cross Price Elasticity of Demand (E_x) (+, , or 0) for each of the following products, please identify the expected economic relationship (complements, substitutes, or unrelated) between the following product pairs. Be sure to provide adequate and logical set of economic reasons that supports the chosen classification of the cross price elasticity of demand.
   1. Fish and Chips (in the UK)
   2. E-books and E-Book Readers
   3. Taxi Service and Uber Service
   4. New furniture and New clothes