C drive-D drive

CCleaner is installed on drive D. It only cleans drive D. How can I get it to clean the C drive also. I haven't found a setting that lets you select drives.

Thanks for any help.

install it on C:

install it on C:

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I did, but oddly enough it still only cleaned files on the D drive, nothing on the C drive. I don't have a "main" drive because I use the two drives interchangeably; some program files are on C while others are on D; so it would be nice if I could clean both.

Strange, I think that it should use %SYSTEMDRIVE% ...