A. Cyan, Magenta, Yellow and Blue
B. Cyan, Magenta, Yellow and Key(Black)
C. Cyan, Magenta, Yellow and Khaki
D. None of these

Solution

B. Cyan, Magenta, Yellow and Key(Black)

Explanation

The full form of CMYK is as follows: C: Cyan M: Magenta Y: Yellow K: Key (Black)