4.—(1) Except where paragraph 6 or 7 applies, a lump sum on death is payable under this paragraph in respect of the death of a pensioner member (P).
(2) The amount of the lump sum on death payable is equal to the lesser of—
(a)five times the annual rate of pension (excluding any element in respect of additional pension), less the amount of the pension payments already made to the member; and
(b)the amount that would have been payable under paragraph 2 had the member died on the member's last day of pensionable service, less any lump sum paid to the member when the pension came into payment as a result of the member exercising the option under regulation 77.
(3) If P exercised the option under regulation 51, for the purposes of sub-paragraph (2)(a), the reference to the amount of the pension payments already made to the member is a reference to the amount of the pension payments that would have been made apart from the election.