The false statement is b).

• a) is true: derivatives traders often prefer LIBOR to Treasury bills because LIBOR better reflects unsecured interbank funding costs.
• c) is true: LIBOR is the lending rate offered by banks, while LIBID is the borrowing/bid rate, so LIBOR is typically higher.
• d) is true: for the same effective rate, the nominal discrete-compounding rate is higher than the continuously compounded rate.
• b) is false because the term Treasury rate does not necessarily imply a US government rate; it can refer to government bond yields in other countries as well.

Therefore, the correct answer is b).