Which is the correct group of traditional primary colours in painting?

Correct answer: Red yellow and blue

In the traditional painting model, red, yellow, and blue are treated as the three primary colours. They form the basic set from which secondary colours are commonly introduced by mixing pairs: yellow and blue produce green, blue and red produce violet, and red and yellow produce orange. Therefore option A is correct. Option B lists secondary colours, while the remaining groups are not the traditional primary set.