Why was the Corpus Juris Civilis significant?

A. Known as the church of "Holy Wisdom," it was rebuilt by Justinian, who boasted that it surpassed Solomon's temple in Jerusalem.
B. Resulting from a series of religious controversies, it divided organized Christianity into the Catholic and Eastern Orthodox branches.
C. Named after the color of their tents, this "Golden Horde" looted and burned Kiev and other Russian towns.
D. Also known as "Justinian's Code," it revised and organized centuries of Roman law into a consistent, understandable legal code.