Yield curve and cash rate (multiple choice)
D)

A can be eliminated because the yield curve includes expectations of future rates (forward rates).

B is true but incomplete because it doesn't include monetary policy or current long term rates.  

C is mostly true, but incomplete because it doesn't mention the expectations for future short term rates.  You could also make an argument that the curve does not include expectations for long term rates.  For example, if the curve goes out to 30 years, it does not give you the 6 month forward 30 year rate.  Therefore if your definition of "long term rates" is the 30 year rate, the curve does not provide expectations for