Which of the following have historically been the rules for qualifying a borrower for a mortgage loan? (Check all that apply.) A. The loan payment should not exceed 25% of gross monthly income of the borrower. B. A lien needs to be attached to the title of the property. C. Borrowers have to compulsorily purchase private mortgage insurance. D. The sum of the monthly payments on all loans to the borrower should not exceed 36% of gross monthly income of