Which of the following loan types may be considered a qualified loan under ability-to-pay rules?

Interest-only mortgages allow borrowers to pay only the interest for a specified period, leading to no reduction in the principal balance during that time. This structure can pose a risk regarding the ability-to-pay rules, as it may not accurately reflect the borrower's long-term repayment capacity, especially once the principal payments begin.

Loans with balloon payments require a large payment at the end of the loan term, which can create financial strain for borrowers who may not be able to meet this obligation. The unpredictability of such payments can make it difficult for lenders to ensure that borrowers meet ability-to-pay standards throughout the loan duration.

Negative amortization occurs when the loan payments do not cover the interest cost, leading to an increasing principal balance. This type of loan can significantly increase the risk for borrowers and is generally not compliant with ability-to-pay regulations, as it does not reflect a sustainable repayment plan.