题目内容：
Reitly (1999) has suggested a number of reasons why organizations choose to en-gage in some forms of human resource planning, but __________is not included.
A．planning has a theoritical effect by optimizing the use of resources B．planning can be used to identify potential problems and minimize the chances of making a bad decision
C．planning involves understanding the present in order to confront the future
D．planning for organizational reasons