A Moving to another question will save this response. uestion 2 Which of the following is/are a primary difference(s) that distinguish service companies from manufacturing firms O a. Service operations require interaction with customers. O b. Service businesses are not concerned witthaupply chain processes. O c. Service businesses are generally easier to manage. O d. Services generally cannot be inventoried. O e. Both a and d above. O f. Both a and c above