In reality , it was sand . Sand used to make the finest glass . After the war , the Barcid king had ordered that no glass was to be given to outsiders at any cost . Thus , over the years , glass had become scarce and the process of glass making lost to the world .
What may happen if the King does n't allow outsiders to have glass after the war .
A. Everyone making glass will be forgotten .
B. None of the above choices .
C. Glass would be around in some places .
D. The process of making glass will be forgotten by everyone .


D