The yield curve is usually plotted using data from U.S. Treasuries. Which of the following is NOT a reason for this?

a) Treasuries do not have maturity risk premiums

b) The Treasuries market is one of the most liquid in the world

c) Since the U.S. Government issues all Treasuries, the risk issuer risk is the same for all Treasuries

d) There are a large number of Treasury maturities to aid in plotting the yield curve, from less than a year to 30 years

e) Treasuries are traded in large volumes every day