For each of the following situations, determine whether the manager is concerned with a short-run or a long-run production decision. Explain briefly in each case.
a. A petroleum drilling supervisor on an offshore drilling platform decides to add an extra six-hour shift each day to keep the drill rig running 24 hours per day.
b. The vice president of offshore petroleum drilling operations in the Gulf of Mexico chooses to deploy three more offshore drilling platforms in the Gulf.
c. A manufacturing engineer plans the production schedule for the month.
d. After studying a demographic report on future increases in birthrates, a hospital administrator decides to add a new pediatric wing to the hospital.