the most common type of Mortgage-Backed security is:

A. the mortgage pass-through, a security that has the borrower's mortgage payments pass through the trustee before being disbursed to the investors.
	B. the participation certificate, a security which passes the borrower's mortgage payments equally among all the owners of the certificates.
	C. the securitized mortgage, a security which increases the liquidity of otherwise illiquid mortgages.
	D. collateralized mortgage obligations, a security which reduces prepayment risk.