(1) The life annuity is payable in advance.
(2) An annuity in money is payable for three months in advance; in the case of another kind of annuity, the period of time for which it is to be paid in advance is determined according to the nature and purpose of the annuity.
(3) If the creditor is alive at the beginning of the period of time for which the annuity is payable in advance, then they are entitled to the entire amount attributable to that period of time.