XIII. BATAS Law is a general professional partnership operating in the City of Valenzuela. It regularly pays value-added tax on its services. All its lawyers have individually paid the required professional tax for the year 2017. However, as a condition for the renewal of its business permit for the year 2017, the City Treasurer of Valenzuela assessed BAT AS Law for the payment of percentage business tax on its gross receipts for the year 2016 in accordance with the Revenue Tax Code of Valenzuela. Is BATAS Law liable to pay the assessed percentage business tax? Explain your answer. (3%)