how is stained glass made?\na. adding metallic oxides to sand and ash or lime, then infusing at high…

how is stained glass made?\na. adding metallic oxides to sand and ash or lime, then infusing at high temperatures\nb. adding metallic oxides to salt, then infusing over time at low temperatures\nc. adding metallic oxides to sulfur, then infusing at high temperatures\nd. adding metallic oxides to sulfur, then infusing at low temperatures\nplease select the best answer from the choices provided\na\nb\nc\nd
Answer
Brief Explanations:
La vidriera se hace agregando óxidos metálicos a arena y ceniza o cal, y luego fundiéndolos a altas temperaturas. Estas mezclas dan color al vidrio.
Answer:
A. adding metallic oxides to sand and ash or lime, then infusing at high temperatures