Why would investors buy securities that contain bad commercial real estate loans?

A$.$ Inaccurate rating agency judgements may cause investors to buy securities containing bad loans.

B$.$ Investors might buy securities containing bad loans if they are risk "enthusiasts."

C$.$ Investors might buy securities containing bad loans if securities are misrepresented.

D$.$ All of the above.

E$.$ Only A and $C$ are plausible.