A. Despite any provision to the contrary, and except as otherwise provided by subsection D of this section, beginning January 1, 2015, the surviving spouse of the head of household who is determined by the United States Department of Defense or any branch of the United States military to have died while in the line of duty shall be entitled to claim an exemption for the full amount of the fair cash value of the homestead until such surviving spouse remarries.

B. In order to be eligible for the exemption authorized by this section, the surviving spouse shall be required to prove residency within the State of Oklahoma and must have previously qualified for the homestead exemption authorized by law or be eligible for the homestead exemption pursuant to law.

C. If a homestead otherwise eligible for the exemption authorized by this section is transferred on or after January 1 of a calendar year, another homestead property acquired by the surviving spouse shall be exempt to the same extent as the homestead property previously owned by such person for the year during which the new homestead is acquired and, subject to the requirements of this section, for each year thereafter.

D. The provisions of this section shall be applicable for the 2014 calendar year with respect to an existing homestead property owned by the surviving spouse of a person previously determined to have died while in the line of duty by the United States Department of Defense or applicable branch of the United States military.