Answer:
i think this is it
There are three major denominations: Roman Catholic, Protestant and Eastern Orthodox, with Protestantism restricted mostly to Northern Europe, and Orthodoxy to East and South Slavic regions, Romania, Moldova, Greece, and Georgia.
Explanation:
I am not sure if this is right but I think its C. Harmful.
I hope you get it right.
Tribonian was a legal authority and public official in the Byzantine Empire (eastern Roman Empire), who was also the chief compiler and perhaps the initiator of the Code of Justinian.