Please explain your answer. Thank you

1.True or False

The LIBOR rate has become a premier short-term interest rate quoted in the European money market and is also used to help set variable interest rates on home loans in the United States.

2. True or False

General obligation municipal bonds normally have a higher return than revenue type municipal bonds because GO's are backed by the full faith and credit of the issuing authority.

3. The optimal risky portfolio:

A. includes investing in T-bills

B. is the best combination of risky assets to be mixed with safe assets to form the complete portfolio.

C. includes international securities

D. a.and b.only

E. a.b.and c.

F. none of the above