问题如下：
When computing net cash flow from operating activities using the indirect method, an addition to net income is most likely to occur when there is a:
选项：
A. gain on the sale of an asset.
B. loss on the retirement of debt.
C. decrease in a deferred tax liability.
解释：
B is correct.
An addition to net income is made when there is a loss on the retirement of debt, which is a non-operating loss. A gain on the sale of an asset and a decrease in deferred tax liability are both subtracted from net-income.
不是要+ L里的变化吗？所以+(负数）不是应该剪去吗？