61. Which of the following regarding vertical integration is not correct? a. Vertical integration assists a firm in controlling the quality of parts and materials used in the production process. b. Vertical integration could result in a company with insufficient capacity being unable to obtain parts and materials during periods of heavy product demand. c. Vertical integration may tend to direct attention away from periodic review of the make or buy decision for certain parts or materials. d. All of the above are true. e. None of the above is true.
4