Sorry, no. First off, nearly all programs have to be installed to "C" to work. Some games allow you to install the really large data files to a different drive, but the program code still gets installed to "C".
Second, you can't move apps from one drive to another because they were installed with lots of different pieces, spread across lots of different system folders. It's not something you can do.
As to the SSD, if the PC came with both an SSD and an HDD, then the OS should have been preloaded to the SSD. So, what makes you think the OS was preloaded to the HDD?
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