Answer:
B. Ethical- this is just a part of doing business because credit history is an important indicator of future payments.
Explanation:
Credit history is a common and important factor that indicates whether the person applying for a mortgage is capable of paying back on time or not. A load defaulter's applications for mortgages often get rejected all over the world. So there is nothing surprising about it as this is a common practice carried out by lenders around the globe.