First to answer gets brainliest. Please answer ASAP :)
What was Ivan IV (The terrible) known for?

A: Expanding the Russian Empire, building magnificent colored domes, and ruling through cruelty

B: Building the Russian army, introducing a new religion, and restoring the Kremlin at great cost to his people

C: Creating a new code of law for Russia, building many churches, but allowing serfs to starve because of high taxes

D: Building a new capital at Kiev, defeating the Mongols with enormous violence, and converting to Christianity