e optional amounts, calculated in accordance with the foregoing paragraph, shall provide a range of optional values such that the amount to be paid to the Qualified Survivor of the Plan Member shall range from 75% to 100% of the pension payable to the Tier 6 Plan Member, varying by increments of 5%. If a Retired Tier 6 Plan Member, previously retired on a disability pension pursuant to the provisions of Section 1706, should be reinstated to active duty upon termination of his or her disability, the election to receive the optional pension as herein provided, shall be deemed cancelled as of the effective date of such reinstatement. A Retired Tier 6 Plan Member, previously retired on a disability pension pursuant to the provisions of Section 1706, shall have the right to cancel any option previously elected by him or her pursuant to the provisions of this subsection in the event his or her pension is subsequently adjusted as provided for in Section 1706. The Board shall by rule provide for a method in which the election to receive an optional pension shall be exercised. (c) Additional Pension Amounts. Whenever any Tier 6 Plan Member or Retired Tier 6 Plan Member shall die and leave surviving him or her, in addition to a Qualified Survivor, a Minor Child or Children or a Dependent Child or Children of the deceased member and the Qualified Survivor, then such Qualified Survivor, shall be paid an additional monthly pension in an amount which shall be equal to 25% of the pension he or she as a Qualified Survivor would be entitled to pursuant to the provisions of subsection (a) of this section while there is one Minor Child or Dependent Child, 40% while there are two Minor Children or Dependent Children or a combination thereof, and 50% while there are three or more Minor Children or Dependent Children or a combination, and such additional monthly pension shall be the exclusive property of such Qualified Survivor and not the property of any such Minor Child or Dependent Child.