Answer:
The true statements are:
Annuities are structured to provide fixed payments for a fixed period of time.
When equal payments are made at the beginning of each period for a certain time period, they are treated as an annuity due.
Explanation:
Annuities provide fixed payments for a lifetime or a specified period of time. With equal payments at the beginning of each period for a fixed period of time, the annuity is regarded as an annuity due. But with equal payments at the end of the period, it is an ordinary annuity. A common example of annuity due is payment for Rent at the beginning of the month or year. If the Rent is paid at the end of the month or year, it is an ordinary annuity.