(a) A life insurance company authorized to engage in the business of life insurance in this state may issue a group contract of decreasing term life insurance to persons who purchase prepaid funeral benefits from the same seller. The amount of life insurance for a purchaser must at all times approximate the future unpaid balance of the purchaser’s contract for prepaid funeral benefits.
(b) A seller has an insurable interest in the life of the purchaser of a prepaid funeral benefits contract to the extent of any unpaid balance of the contract. The proceeds of a life insurance policy received by the seller on the life of the purchaser shall be applied to the unpaid balance.

(c) This section does not affect the funding of prepaid funeral benefits by other insurance contracts as provided by Subchapter E.