Question: What percent of CDO assets were subprime and other non-prime mortgage debt in 2007?

Is "As described in the section on subprime lending, the CDS and portfolio of CDS called synthetic CDO enabled a theoretically infinite amount to be wagered on the finite value of housing loans outstanding, provided that buyers and sellers of the derivatives could be found." the correct answer?
Select from the following.
(1). yes;
(2). no;
(2).