A cost-minimizing company decreases wages it pays its workers, but it keeps the quantity of production constant in the long run. Further assume that the unit cost of capital does not change. On a diagram, where the quantity of capital on the vertical axis, and the quantity of labour on the horizontal axis: O A. the isoexpenditure line will become flatter. OB. the isoexpenditure line will shift to the right in a parallel fashion. O C. the isoexpenditure line will become steeper. O D. the isoexpenditure line will shift to the left in a parallel fashion.