问题如下：
Which of the following is included in the asset's essential characteristic?
选项：
A.Tangible.
B.future economic outflow.
C.provide future economic benefits.
解释：
A is incorrect because some assets, for example goodwill, are intangible.
B is incorrect since assets are future economic intflow, not outflow.
assets 不是资金的去处吗？为什么B不对？
