(1) Subject to this section and to sections 142A, 144 and 146, the rate (in this Chapter referred to as "the scheduled rate") of jobseeker's allowance shall be -

(a) in the case of a person who -

(i) in any continuous period of unemployment, as read in accordance with section 141 (3), has been in receipt of jobseeker's benefit, jobseeker's allowance or jobseeker's pay-related benefit in respect of not less than 390 days of unemployment, or

(ii) immediately before the week of unemployment for which jobseeker's allowance is claimed, was in receipt of -

(I) one-parent family payment, but has ceased to be entitled to that allowance by virtue of no longer being regarded as a qualified parent within the meaning of section 172 (1), or

(IA) bereaved partner's (non-contributory) pension, but has ceased to be entitled to that pension by virtue of no longer being regarded as a bereaved partner within the meaning of section 162(1), or

(II) carer's allowance, but has ceased to be entitled to that allowance by virtue of no longer being regarded as a carer within the meaning of section 179 (1),