Which hierarchical level is represented by label A? 
Definitions:
Albrecht Dürer
A German painter, printmaker, and theorist of the Renaissance period, best known for his high-quality woodcut prints.
Knight, Death, Devil
An engraving by Albrecht Dürer from 1513, depicting a knight riding with Death and the Devil, symbolizing moral integrity in the face of corruption.
Northern European
Pertaining to the geographic region in Europe that includes countries like Denmark, Finland, Iceland, Norway, and Sweden, known for their Viking history and cold climates.
Self-Portrait
An artist's representation of themselves, which may be expressed through various artistic mediums such as painting, photography, or sculpture.
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