A.
Real property owned by one or more persons, each of whom is 65 years of age or over, or real property owned by husband and wife, one of whom is 65 years of age or over, shall be exempt from taxation by the City of Auburn in the City of Auburn to the extent of 50% of the assessed valuation thereof.
B.
Any exemption provided by this article shall be computed after all other partial exemptions allowed by law have been subtracted from the total amount assessed.
C.
The real property tax exemption on real property owned by husband and wife, one of whom is 65 years of age or over, once granted, shall not be rescinded by the City of Auburn solely because of the death of the older spouse so long as the surviving spouse is at least 62 years of age.