In the book of Nahum, Nineveh's destruction is prophesied. While Nineveh was known for its wickedness, what is a key theological reason emphasized in Nahum for its downfall?

A Nineveh's geographical location made it vulnerable to invasion. B Nineveh's wealth and power threatened surrounding nations. C Nineveh's idolatry and violence demonstrated defiance against God's justice and a rejection of His sovereignty, warranting divine judgment. D Nineveh refused to adopt the agricultural practices of Israel.