Objective: how to make a non-toxic paint with egg and chalk

Which of the following solutions is more sound in terms of naive physics reasoning?

Choose your answer from: A. Collect chalk pieces. Soak chalk in a muffin tray. Grind chalk into powder. Flash pasteurize eggs. Separate chocolate egg yolk from egg whites. Add an egg yolk to each chalked space on the muffin tray. Let it sit for a few minutes.; B. Collect chalk pieces. Soak chalk in a muffin tray. Grind chalk into powder. Flash pasteurize eggs. Separate egg yolk from egg whites. Add an egg yolk to each chalked space on the muffin tray. Let it sit for a few minutes.;
B.