与SLE患者血小板减少有关的抗体是（）。

A.ANA

B.抗心磷脂抗体

C.抗dsDNA抗体

D.抗Sm抗体

E.抗RNP抗体

Which of the following statements about option-adjusted spread and nominal spread is most accurate（）

A. Option-adjusted spread will equal nominal spread if the option favors the investor.

B. Option-adjusted spread will be greater than nominal spread if the option favors the issuer.

C. The longer the deferred call period, the closer the value of the option-adjusted spread will be to the value of the nominal spread.