Any Theory of the Term Structure of Interest Rates Needs

Multiple Choice

Any theory of the term structure of interest rates needs to explain each of the following, except why:

A) short-term yields are more volatile than long-term yields.
B) the yields of different maturities tend to move together.
C) short-term yields are usually higher than long-term yields.
D) long-term yields are usually higher than short-term yields.