What are the ways of preventing of inclusion of air bubbles in shrinkage dish?

Coating the surface with a thin layer of oil

Mixing the soil with sufficient distilled water and Making the soil pasty enough

What are the ways of preventing of inclusion of air bubbles�

1.	What are the ways of preventing of inclusion of air bubbles in shrinkage dish?
A.	Mixing the soil with sufficient distilled water and Making the soil pasty enough
B.	Coating the surface with a thin layer of oil
C.	All of the mentioned
D.	None of the mentioned
Answer» B. Coating the surface with a thin layer of oil