Answer;
B. are riskier for borrowers
A similarity between mortgages and auto loan is that both are less risky for lenders and riskier to borrowers.
Explanation;
Mortgages and auto loans are examples of secured debts, in which the item being financed becomes the collateral for the financing. That is; for example with a car loan, if the borrower fails to make timely payments, the loan issuer eventually acquires ownership of the vehicle.
These types of secured loans are less risky to the lender, but are risky to the borrowers.
