US Government Agency Debt Does Which One of the Following

U.S. government agency debt does which one of the following?

A) has a larger bid-ask spread than U.S. Treasury debt
B) provides more liquidity than U.S. Treasury debt
C) provides security in the form of the full faith and credit of the U.S. government
D) provides triple tax-free income
E) pays a lower yield than comparable U.S. Treasury debt