If the applicable assets of the estate are insufficient to pay all claims in full, the personal representative shall make payment in the following order: Fees due to the register; Costs and expenses of administration; Funeral expenses as provided in § 8–106 of this subtitle; Compensation of personal representatives as provided in § 7–601 of this article, for legal services as provided in § 7–602 of this article, and commissions of licensed real estate brokers; Family allowance as provided in § 3–201 of this article; Unpaid child support due by the decedent; Taxes due by the decedent; Reasonable medical, hospital, and nursing expenses of the last illness of the decedent; Rent payable by the decedent for not more than three months in arrears; Wages, salaries, or commission for services performed for the decedent within three months prior to death of the decedent; Assistance paid under the Public Assistance to Adults Program, as provided in § 5–407(d) of the Human Services Article; and All other claims. A preference may not be given in the payment of a claim over another claim of the same class. A claim due and payable is not entitled to a preference over claims not yet due.