NO.PZ2016012102000028
问题如下：
Which of the following will most likely decrease operating income?
选项：
A. Decreasing the manager's compensation.
B. Increasing the estimated useful life of equipment.
C. Decreasing the estimated useful life of equipment.
解释：
C is correct.
Decreasion the equipment's useful life will result in higer depreciaion expense and decrease operating income.
解析：降低设备的预期使用年限，则每年的折旧费用会增加，operating income减少，选项C正确。
但还想问一下，operating income和operating profit意思一样吗？
