Which One of the Following Statements Is Correct Concerning Bond

Which one of the following statements is correct concerning bond classifications?

A) A debenture is a long-term bond secured by the fixed assets of a firm.
B) A mortgage security is a bond issued solely by a home builder.
C) A note is a bond which has an original maturity date longer than 10 years.
D) A subordinated bond receives preferential treatment over all other bonds in a bankruptcy.
E) A callable bond can be repurchased by the issuer prior to the initial maturity date.