Which of the following is/are potential barriers to successful controlling.

Which of the following is/are potential barriers to successful controlling.

Which of the following is/are potential barriers to successful controlling?

I. Overemphasizing short-term production as opposed to long-term production.
II. Periodic review of standards.
III. Inflexibility.
IV. Identification of only major exceptions.

[A]Only (III) above
[B]Only (IV) above
[C]Both (I) and (III) above
[D]Both (II) and (IV) above