The burden shall be on the owner and operator of any residential property for which an exemption is claimed pursuant to any of the provisions of sections 39-3-109 and 39-3-112 to show facts sufficient to support the exemption claimed. In determining whether or not a particular property is entitled to such an exemption provided for in any of said sections, the administrator may require the owner or operator of such property to annually submit a complete financial report on its operations and may require any occupants whose residential units are claimed to qualify for such exemption to submit copies of their federal or state income tax returns.