With no explanation, label text_A→text_B with either "DON'T KNOW", "NO" or "YES".
text_A: Ultimately it has been determined that his death was likely the result of the combination of his multiple weakening disorders, a leg fracture, perhaps as the result of a fall, and a severe malarial infection. The placement of the mummy's embalming incision is unique. This, combined with the two levels of resin inside his skull, have led to suggestions that an initial mummification was carried out by an embalmer who was trying out new techniques that proved highly effective in this case
text_B: Is the presence of two layers of resin inside the skull most likely explained by the fact that a more competent embalmer later finished preserving this body?
NO.