The answer is (B) black,white and gray.
monochromatism is a rare form of color blindness with one type of receptor (the gray-scale pigment), an individual with this pigment is called a monochromat . Hence, a monochromat can only see in shades of lightness mainly white, gray and black.
<span>a)groups of militant university and high-school students formed into paramilitary units to help Mao combat his enemies
'learn revolution by making revolution'</span>
Yes he was diagnosed with infantile paralysis, also known as polio in 1921 at the age of 39