Answer:
A SUBPRIME borrower is a borrower with a flawed credit history and an ALT-A BORROWER is a borrower who states his or her income but does not document or prove the amount of income.
Step-by-step explanation:
Subprime borrowers are borrowers that have a bad credit score and because of this, any bank or other lending institution will either reject them as clients or charge them a really high interest rate on a loan.
An Alt-A borrower is in the middle between a prime borrower (good credit score) and a subprime borrower. He/she will not get rejected as often, but the interest rates will still be relatively high and the amounts of money borrowed tend to be smaller than prime borrowers. Some companies like Fannie Mae or Freddie Mac do not accept Alt-A borrowers, but most banks do.