An Australian university is evaluating how they should invest some money they have. They won't need the money until 10-years time to pay for a new building. They have received the following advice:

The University should invest the money in a 20-year Australian government bond because this bond currently offers the highest rate of return available for long-term bonds. The rate of return an investor makes for this bond is indicated by its coupon rate which is 4.75% per annum on a $100 face value. This rate is close to a guaranteed rate of return that the University will earn if it invests in the bond.

Are the points made in this statement correct? Explain fully