6Where the transferor became entitled to his interest on the death of his spouse on or after 10th March 1981—
(a)he shall for the purposes of paragraph 2(2)(b) above be deemed to have been beneficially entitled to it for any period for which his spouse was beneficially entitled to it;
(b)the condition set out in paragraph 2(3)(a) shall be taken to be satisfied if and only if it is satisfied in relation to his spouse; and
(c)the condition set out in paragraph 2(3)(b) shall be taken to be satisfied only if it is satisfied both in relation to him and in relation to his spouse.