Which test best compares the colour bias of two red pigments?

Correct answer: Mix each separately with the same yellow and blue, then compare the resulting oranges and violets

A controlled mixing test reveals colour bias more directly than price or appearance alone. Mix each red separately with the same yellow and the same blue. A warm red often makes a clearer orange, while a cooler, bluish red can make a cleaner violet. Comparing these mixtures makes option A the best test.