Yasuko's Art Emporium (YAE) ships art from its studio located in the Far East to its distribution center located on the West Coast of the United States. YAE can send the art either via transoceanic ship freight service (15 days transit) or by air freight (2 days transit time). YAE ships 18,000 pieces of art annually. a) Calculate the average annual transportation inventory when sending the art via transoceanic ship freight service. b) Calculate the average annual transportation inventory when sending the art via air freight. c) What additional information is needed to compare the two alternatives?