For the majority of people, Social Security Disability benefits are not taxable. This is true for people who have income in addition to disability benefits as well as those who do not. (Most of the one-third of disability recipients who do pay taxes on benefits receive SSDI benefits, not SSI.
Mixing all three gives black. The CMYK color model (process color, four color) is a subtractive color model, used in color printing, and is also used to describe the printing process itself. CMYK refers to the four inks used in some color printing: cyan, magenta, yellow, and key (black).
Color channels in the original image become spot color channels in the converted image. Converting a CMYK image to Multichannel mode creates cyan, magenta, yellow, and black spot channels. Converting an RGB image to Multichannel mode creates cyan, magenta, and yellow spot channels. Deleting a channel from an RGB, CMYK, or Lab image automatically converts the image to Multichannel mode, flattening layers. To export a multichannel image, save it in Photoshop DCS 2.0 format.