(a) in the case of a head of the household who does not receive a monthly allowance for shelter pursuant to the social services law, that the landlord may not collect from the tenant to whom it is issued rent at a rate in excess of either one-third of the aggregate disposable income, or the rent in effect immediately preceding the eligibility date, whichever is greater; or
(b) in the case of a head of the household who receives a monthly allowance for shelter pursuant to the social services law, that the landlord may not collect from the tenant to whom it is issued rent at a rate in excess of either the maximum allowance for shelter which the head of the household is entitled to receive, or the rent in effect immediately preceding the eligibility date, whichever is greater; and
(c) notwithstanding clause (a) of this subparagraph, in the case of an eligible head of the household who has been granted a rent increase exemption order that is in effect as of January first, two thousand fifteen or takes effect on or before July first, two thousand fifteen, that the landlord may not collect from the tenant to whom it is issued rent at a rate in excess of the amount specified in such order, except as may be adjusted by any other provision of this chapter; and
(d) that the landlord may collect from the tenant increases in rent based on an electrical inclusion adjustment or an increase in dwelling space, services or equipment.