(1) Subject to this Act, on the death of a woman to whom an old age (contributory) pension or retirement pension was payable at an increased weekly rate by virtue of section 87(1) or 91(1) in respect of a period ending on such death, her husband shall be entitled to survivor's benefit:
Provided that he is incapable of self-support by reason of some mental or physical infirmity.
(2) Survivor's benefit shall not be payable for any period after -
(a) the remarriage of the beneficiary, or
(b) the beneficiary ceases to be incapable of self-support by reason of some physical or mental infirmity.
(3) A man shall be disqualified for receiving survivor's benefit if and so long as he and any other person are cohabiting as husband and wife.
(4) Where, but for the provisions of this subsection, benefit under this section and old age (contributory) pension or retirement pension would be payable to a person in respect of any period -
(i) benefit under this section shall not be payable in respec