Debt canceled in a personal bankruptcy is taxable as cancellation of debt income to what extent?

All canceled debt, except for that related to real property, is taxable as cancellation of debt income.

Unsecured debt that is canceled in bankruptcy is taxable as income.

Only secured debt in excess of the fair market value of the collateral is taxable as income.

Debt canceled in a bankruptcy proceeding under federal law is not taxable as cancellation of debt income.