Ed Brickey wants to be certain he has done all he can do to help his business survive, so he has written a business plan. One advantage of developing the plan is that it（ ）.
选项：

A:forces Ed to think carefully about all aspects of his planned business
B:enables Ed to switch himself from a sole proprietorship to a corporation without any further paperwork
C:focuses Ed's attention on his personal talents and experiences
D:makes Ed feel how successful he is