In What Way Were the Artisans of Constantinople Similar to Their

In what way were the artisans of Constantinople similar to their counterparts in the West?

A) They had begun to form a proletariat
B) Like their counterparts in medieval European towns, the artisans were organized into guilds
C) In the capital city of the Ottoman Empire, artisans were free of governmental supervision
D) Like the earlier West, craft production was limited and there were few independent artisans