下列(　　)不是民事法律关系的特征。

A．主体的私人性

B．内容为私权利和私义务

C．只能由民法规范调整

D．产生的自治性

Which of the following statements regarding the different theories of the term structure of interest rates is FALSE（）

A. The preferred habitat theory can be described as investors that prefer to stay within a particular maturity range of the yield curve regardless of yields in other maturity ranges.

B. The market segmentation theory, pure expectations theory, preferred habitat theory, and liquidity preference theory are all consistent with any shape of the yield curve.

C. An upward sloping yield curve can be consistent with the liquidity preference theory even with expectations of declining short term interest rates.