how to modify the Symbolic link file.

Now I have many Symbolic link files.
for example there are two dirs named A and B. Dir A has many config file,
And Dir B has the sysmbolic link files to the config files in A.

Now I want to rename dir A to C. So the link file in B will be not valid.
In dir B, use command "ls -al", the output will be :

I want to modify all link files in B to link the config files in dir C, and the output will be:

How can I implement this easily?
Thanks very much.

Rename A to C, but also create a link A -> C !

yeah, This is a very smart method. But I need to delete the dir A.