For a science project Kala wants to determine whether the color of some purple candy comes from one dye or from several mixed together. Kala asks her chemistry teacher, who says "I think you should make a А ]." Kala says "But I don't know anything about B ]r Her teacher replies
"Don't worry, I'll explain the method. First, we'll need to dissolve a sample of the candy in a solvent. Next, we'll drop a small amount of this solution onto one
edge of a large sheet of coarse paper laid flat in a tray..."
What are the missing words A and B in this story?
A=
Х
B =