Cyan Magenta yellow (CMY) in Histogram

[BenB78]

My Histogram in LRc is showing only the RGB colors, how can I get also the CMY colors displayed in my histogram, The CMY colors as you know results from the overlap of colors from RGB. How can I get RGB and CMY displayed in my histogram? Thank you in advance

[Ian Lyons]

There's no way to display CMYK. The histogram only shows RGB.