VLC is 4.72 GB, according to Windows 10.

I searched and googled but neither turned up anything that helped me so I decided to try it here. I got a notification I need to clear up space on my C: drive, so I set about that. I went to settings screen and looked through the size of various programs. One thing it indicated is that VLC Media Player is 4,72 gigs, which seems astounding. When I go to its actual folder it's 121 mb, which seems a lot more what you'd expect. What's going on here? It also says FireFox is 21.3 GB. Is somthing weird going on? The other indicated sizes of other programs seem to be in order.