1. Farmers if I am correct
Answer: the gold solidus of the Byzantine empire (Eastern Rome).
Explanation: There were lots of trades with gold, going into the Byzantime Empire, {used to be rome}
I would have to assume the Orthodox Church is one of them because during that time, they had the public wrapped around their fingers and they didn't want science to prove how inaccurate their information was. Of course, I might be wrong
C. figures aren't typically shown