Which of the following is correct if at the end of Crystal Imports' first year of operations, assets are $$800,000$ and owners' equity is $$720,000?$

A$.$ The owner must have invested $$720,000$ to start the business.

B$.$ The business must be operating profitably.

C$.$ Liabilities are $$80,000.$

D$.$ Liabilities are $$1,520,000.$